Add registrations_require_3pid synapse option

roles/matrix-synapse/defaults/main.yml

@@ -114,6 +114,9 @@ matrix_synapse_use_presence: true
 # Controls whether people with access to the homeserver can register by themselves.
 matrix_synapse_enable_registration: false
 
+# A list of 3PID types which users must supply when registering (possible values: email, msisdn).
+matrix_synapse_registrations_require_3pid: []
+
 # Users who register on this homeserver will automatically be joined to these rooms.
 # Rooms are to be specified using addresses (e.g. `#address:example.com`)
 matrix_synapse_auto_join_rooms: []