add synapse config enable_group_creation

roles/matrix-synapse/defaults/main.yml

@@ -155,6 +155,9 @@ matrix_synapse_allow_public_rooms_over_federation: false
 # Controls whether people with access to the homeserver can register by themselves.
 matrix_synapse_enable_registration: false
 
+# Allows non-server-admin users to create groups on this server
+matrix_synapse_enable_group_creation: false
+
 # A list of 3PID types which users must supply when registering (possible values: email, msisdn).
 matrix_synapse_registrations_require_3pid: []