Use coturn sharedSecret when provided (#689)

* Allow external Coturn deployment

* Use .Values.coturn.sharedSecret when provided

* secretKey

* Update version number

* Apply suggestions from code review - bump chart version

---------

Co-authored-by: Eric Meehan <[email protected]>
Co-authored-by: Jesse Hitch <[email protected]>

Author: 3 people

charts/matrix/Chart.yaml

@@ -8,7 +8,7 @@ sources:
 
 type: application
 
-version: 20.3.0
+version: 20.3.1
 
 # renovate: image=ghcr.io/element-hq/synapse
 appVersion: v1.140.0

charts/matrix/templates/synapse/_homeserver.yaml

@@ -928,7 +928,7 @@ turn_uris:
 {{- if and (not .Values.coturn.existingSecret) (empty .Values.coturn.sharedSecret) -}}
 turn_shared_secret: "{{ randAlphaNum 24 }}"
 {{- else }}
-turn_shared_secret: "REPLACE_ME"
+turn_shared_secret: "{{ .Values.coturn.sharedSecret }}"
 {{- end }}
 
 # How long generated TURN credentials last