Update homeserver.yaml to keep up with Synapse v1.30.0

Related to https://github.com/spantaleev/matrix-docker-ansible-deploy/pull/958

roles/matrix-synapse/templates/synapse/homeserver.yaml.j2

@@ -65,8 +65,7 @@ use_presence: {{ matrix_synapse_use_presence|to_json }}
 # Whether to require authentication to retrieve profile data (avatars,
 # display names) of other users through the client API. Defaults to
 # 'false'. Note that profile data is also available via the federation
-# API, so this setting is of limited value if federation is enabled on
-# the server.
+# API, unless allow_profile_lookup_over_federation is set to false.
 #
 require_auth_for_profile_requests: {{ matrix_synapse_require_auth_for_profile_requests|to_json }}
 
@@ -1777,10 +1776,14 @@ saml2_config:
 #       offer the user a choice of login mechanisms.
 #
 #   idp_icon: An optional icon for this identity provider, which is presented
-#       by identity picker pages. If given, must be an MXC URI of the format
-#       mxc://<server-name>/<media-id>. (An easy way to obtain such an MXC URI
-#       is to upload an image to an (unencrypted) room and then copy the "url"
-#       from the source of the event.)
+#       by clients and Synapse's own IdP picker page. If given, must be an
+#       MXC URI of the format mxc://<server-name>/<media-id>. (An easy way to
+#       obtain such an MXC URI is to upload an image to an (unencrypted) room
+#       and then copy the "url" from the source of the event.)
+#
+#   idp_brand: An optional brand for this identity provider, allowing clients
+#       to style the login flow according to the identity provider in question.
+#       See the spec for possible options here.
 #
 #   discover: set to 'false' to disable the use of the OIDC discovery mechanism
 #       to discover endpoints. Defaults to true.
@@ -1790,7 +1793,26 @@ saml2_config:
 #
 #   client_id: Required. oauth2 client id to use.
 #
-#   client_secret: Required. oauth2 client secret to use.
+#   client_secret: oauth2 client secret to use. May be omitted if
+#        client_secret_jwt_key is given, or if client_auth_method is 'none'.
+#
+#   client_secret_jwt_key: Alternative to client_secret: details of a key used
+#      to create a JSON Web Token to be used as an OAuth2 client secret. If
+#      given, must be a dictionary with the following properties:
+#
+#          key: a pem-encoded signing key. Must be a suitable key for the
+#              algorithm specified. Required unless 'key_file' is given.
+#
+#          key_file: the path to file containing a pem-encoded signing key file.
+#              Required unless 'key' is given.
+#
+#          jwt_header: a dictionary giving properties to include in the JWT
+#              header. Must include the key 'alg', giving the algorithm used to
+#              sign the JWT, such as "ES256", using the JWA identifiers in
+#              RFC7518.
+#
+#          jwt_payload: an optional dictionary giving properties to include in
+#              the JWT payload. Normally this should include an 'iss' key.
 #
 #   client_auth_method: auth method to use when exchanging the token. Valid
 #       values are 'client_secret_basic' (default), 'client_secret_post' and
@@ -1910,7 +1932,7 @@ oidc_providers:
   #
   #- idp_id: github
   #  idp_name: Github
-  #  idp_brand: org.matrix.github
+  #  idp_brand: github
   #  discover: false
   #  issuer: "https://github.com/"
   #  client_id: "your-client-id" # TO BE FILLED
@@ -1922,8 +1944,8 @@ oidc_providers:
   #  user_mapping_provider:
   #    config:
   #      subject_claim: "id"
-  #      localpart_template: "{% raw %}{{ user.login }}{% endraw %}"
-  #      display_name_template: "{% raw %}{{ user.name }}{% endraw %}"
+  #      localpart_template: "{{ user.login }}"
+  #      display_name_template: "{{ user.name }}"
 
 
 # Enable Central Authentication Service (CAS) for registration and login.
@@ -2675,19 +2697,20 @@ user_directory:
 
 
 
-# Local statistics collection. Used in populating the room directory.
+# Settings for local room and user statistics collection. See
+# docs/room_and_user_statistics.md.
 #
-# 'bucket_size' controls how large each statistics timeslice is. It can
-# be defined in a human readable short form -- e.g. "1d", "1y".
+stats:
+  # Uncomment the following to disable room and user statistics. Note that doing
+  # so may cause certain features (such as the room directory) not to work
+  # correctly.
   #
-# 'retention' controls how long historical statistics will be kept for.
-# It can be defined in a human readable short form -- e.g. "1d", "1y".
+  #enabled: false
+
+  # The size of each timeslice in the room_stats_historical and
+  # user_stats_historical tables, as a time period. Defaults to "1d".
   #
-#
-#stats:
-#   enabled: true
-#   bucket_size: 1d
-#   retention: 1y
+  #bucket_size: 1h
 
 
 # Server Notices room configuration