Rename matrix_*_postgres_* back to matrix_*_database_*

I was thinking that it makes sense to be more specific,
and using `_postgres_` also separated these variables
from the `_database_` variables that ended up in bridge configuration.

However, @jdreichmann makes a good point
(https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/740#discussion_r542281102)
that we don't need to be so specific and can allow for other engines (like MySQL) to use these variables.

roles/matrix-bridge-appservice-discord/defaults/main.yml

@@ -53,16 +53,16 @@ matrix_appservice_discord_database_engine: 'sqlite'
 matrix_appservice_discord_sqlite_database_path_local: "{{ matrix_appservice_discord_data_path }}/discord.db"
 matrix_appservice_discord_sqlite_database_path_in_container: "/data/discord.db"
 
-matrix_appservice_discord_postgres_username: 'matrix_appservice_discord'
-matrix_appservice_discord_postgres_password: 'some-password'
+matrix_appservice_discord_database_username: 'matrix_appservice_discord'
+matrix_appservice_discord_database_password: 'some-password'
 matrix_appservice_discord_postgres_hostname: 'matrix-postgres'
-matrix_appservice_discord_postgres_port: 5432
-matrix_appservice_discord_postgres_db_name: 'matrix_appservice_discord'
+matrix_appservice_discord_database_port: 5432
+matrix_appservice_discord_database_db_name: 'matrix_appservice_discord'
 
 # These 2 variables are what actually ends up in the bridge configuration.
 # It's best if you don't change them directly, but rather redefine the sub-variables that constitute them.
 matrix_appservice_discord_database_filename: "{{ matrix_appservice_discord_sqlite_database_path_in_container }}"
-matrix_appservice_discord_database_connString: 'postgresql://{{ matrix_appservice_discord_postgres_username }}:{{ matrix_appservice_discord_postgres_password }}@{{ matrix_appservice_discord_postgres_hostname }}:{{ matrix_appservice_discord_postgres_port }}/{{ matrix_appservice_discord_postgres_db_name }}'
+matrix_appservice_discord_database_connString: 'postgresql://{{ matrix_appservice_discord_database_username }}:{{ matrix_appservice_discord_database_password }}@{{ matrix_appservice_discord_postgres_hostname }}:{{ matrix_appservice_discord_database_port }}/{{ matrix_appservice_discord_database_db_name }}'
 
 
 # Tells whether the bot should make use of "Privileged Gateway Intents".

roles/matrix-bridge-mautrix-facebook/defaults/main.yml

@@ -45,13 +45,13 @@ matrix_mautrix_facebook_database_engine: 'sqlite'
 matrix_mautrix_facebook_sqlite_database_path_local: "{{ matrix_mautrix_facebook_data_path }}/mautrix-facebook.db"
 matrix_mautrix_facebook_sqlite_database_path_in_container: "/data/mautrix-facebook.db"
 
-matrix_mautrix_facebook_postgres_username: 'matrix_mautrix_facebook'
-matrix_mautrix_facebook_postgres_password: 'some-password'
+matrix_mautrix_facebook_database_username: 'matrix_mautrix_facebook'
+matrix_mautrix_facebook_database_password: 'some-password'
 matrix_mautrix_facebook_postgres_hostname: 'matrix-postgres'
-matrix_mautrix_facebook_postgres_port: 5432
-matrix_mautrix_facebook_postgres_db_name: 'matrix_mautrix_facebook'
+matrix_mautrix_facebook_database_port: 5432
+matrix_mautrix_facebook_database_db_name: 'matrix_mautrix_facebook'
 
-matrix_mautrix_facebook_postgres_connection_string: 'postgresql://{{ matrix_mautrix_facebook_postgres_username }}:{{ matrix_mautrix_facebook_postgres_password }}@{{ matrix_mautrix_facebook_postgres_hostname }}:{{ matrix_mautrix_facebook_postgres_port }}/{{ matrix_mautrix_facebook_postgres_db_name }}'
+matrix_mautrix_facebook_postgres_connection_string: 'postgresql://{{ matrix_mautrix_facebook_database_username }}:{{ matrix_mautrix_facebook_database_password }}@{{ matrix_mautrix_facebook_postgres_hostname }}:{{ matrix_mautrix_facebook_database_port }}/{{ matrix_mautrix_facebook_database_db_name }}'
 
 matrix_mautrix_facebook_appservice_database: "{{
 	{

roles/matrix-bridge-mautrix-hangouts/defaults/main.yml

@@ -52,13 +52,13 @@ matrix_mautrix_hangouts_database_engine: 'sqlite'
 matrix_mautrix_hangouts_sqlite_database_path_local: "{{ matrix_mautrix_hangouts_data_path }}/mautrix-hangouts.db"
 matrix_mautrix_hangouts_sqlite_database_path_in_container: "/data/mautrix-hangouts.db"
 
-matrix_mautrix_hangouts_postgres_username: 'matrix_mautrix_hangouts'
-matrix_mautrix_hangouts_postgres_password: 'some-password'
+matrix_mautrix_hangouts_database_username: 'matrix_mautrix_hangouts'
+matrix_mautrix_hangouts_database_password: 'some-password'
 matrix_mautrix_hangouts_postgres_hostname: 'matrix-postgres'
-matrix_mautrix_hangouts_postgres_port: 5432
-matrix_mautrix_hangouts_postgres_db_name: 'matrix_mautrix_hangouts'
+matrix_mautrix_hangouts_database_port: 5432
+matrix_mautrix_hangouts_database_db_name: 'matrix_mautrix_hangouts'
 
-matrix_mautrix_hangouts_postgres_connection_string: 'postgresql://{{ matrix_mautrix_hangouts_postgres_username }}:{{ matrix_mautrix_hangouts_postgres_password }}@{{ matrix_mautrix_hangouts_postgres_hostname }}:{{ matrix_mautrix_hangouts_postgres_port }}/{{ matrix_mautrix_hangouts_postgres_db_name }}'
+matrix_mautrix_hangouts_postgres_connection_string: 'postgresql://{{ matrix_mautrix_hangouts_database_username }}:{{ matrix_mautrix_hangouts_database_password }}@{{ matrix_mautrix_hangouts_postgres_hostname }}:{{ matrix_mautrix_hangouts_database_port }}/{{ matrix_mautrix_hangouts_database_db_name }}'
 
 matrix_mautrix_hangouts_appservice_database: "{{
 	{

roles/matrix-bridge-mautrix-telegram/defaults/main.yml

@@ -56,13 +56,13 @@ matrix_mautrix_telegram_database_engine: 'sqlite'
 matrix_mautrix_telegram_sqlite_database_path_local: "{{ matrix_mautrix_telegram_data_path }}/mautrix-telegram.db"
 matrix_mautrix_telegram_sqlite_database_path_in_container: "/data/mautrix-telegram.db"
 
-matrix_mautrix_telegram_postgres_username: 'matrix_mautrix_telegram'
-matrix_mautrix_telegram_postgres_password: 'some-password'
+matrix_mautrix_telegram_database_username: 'matrix_mautrix_telegram'
+matrix_mautrix_telegram_database_password: 'some-password'
 matrix_mautrix_telegram_postgres_hostname: 'matrix-postgres'
-matrix_mautrix_telegram_postgres_port: 5432
-matrix_mautrix_telegram_postgres_db_name: 'matrix_mautrix_telegram'
+matrix_mautrix_telegram_database_port: 5432
+matrix_mautrix_telegram_database_db_name: 'matrix_mautrix_telegram'
 
-matrix_mautrix_telegram_postgres_connection_string: 'postgresql://{{ matrix_mautrix_telegram_postgres_username }}:{{ matrix_mautrix_telegram_postgres_password }}@{{ matrix_mautrix_telegram_postgres_hostname }}:{{ matrix_mautrix_telegram_postgres_port }}/{{ matrix_mautrix_telegram_postgres_db_name }}'
+matrix_mautrix_telegram_postgres_connection_string: 'postgresql://{{ matrix_mautrix_telegram_database_username }}:{{ matrix_mautrix_telegram_database_password }}@{{ matrix_mautrix_telegram_postgres_hostname }}:{{ matrix_mautrix_telegram_database_port }}/{{ matrix_mautrix_telegram_database_db_name }}'
 
 matrix_mautrix_telegram_appservice_database: "{{
 	{

roles/matrix-bridge-mautrix-whatsapp/defaults/main.yml

@@ -40,13 +40,13 @@ matrix_mautrix_whatsapp_database_engine: 'sqlite'
 matrix_mautrix_whatsapp_sqlite_database_path_local: "{{ matrix_mautrix_whatsapp_data_path }}/mautrix-whatsapp.db"
 matrix_mautrix_whatsapp_sqlite_database_path_in_container: "/data/mautrix-whatsapp.db"
 
-matrix_mautrix_whatsapp_postgres_username: 'matrix_mautrix_whatsapp'
-matrix_mautrix_whatsapp_postgres_password: 'some-password'
+matrix_mautrix_whatsapp_database_username: 'matrix_mautrix_whatsapp'
+matrix_mautrix_whatsapp_database_password: 'some-password'
 matrix_mautrix_whatsapp_postgres_hostname: 'matrix-postgres'
-matrix_mautrix_whatsapp_postgres_port: 5432
-matrix_mautrix_whatsapp_postgres_db_name: 'matrix_mautrix_whatsapp'
+matrix_mautrix_whatsapp_database_port: 5432
+matrix_mautrix_whatsapp_database_db_name: 'matrix_mautrix_whatsapp'
 
-matrix_mautrix_whatsapp_postgres_connection_string: 'postgresql://{{ matrix_mautrix_whatsapp_postgres_username }}:{{ matrix_mautrix_whatsapp_postgres_password }}@{{ matrix_mautrix_whatsapp_postgres_hostname }}:{{ matrix_mautrix_whatsapp_postgres_port }}/{{ matrix_mautrix_whatsapp_postgres_db_name }}'
+matrix_mautrix_whatsapp_postgres_connection_string: 'postgresql://{{ matrix_mautrix_whatsapp_database_username }}:{{ matrix_mautrix_whatsapp_database_password }}@{{ matrix_mautrix_whatsapp_postgres_hostname }}:{{ matrix_mautrix_whatsapp_database_port }}/{{ matrix_mautrix_whatsapp_database_db_name }}'
 
 matrix_mautrix_whatsapp_appservice_database_type: "{{
 	{