Add UDP endpoints to coturn Helm chart

changelog.d/0-release-notes/coturn-udp-ports

@@ -0,0 +1,12 @@
+For users of the (currently alpha) coturn Helm chart:
+**manual intervention may be required** when upgrading to
+this version of the chart from a prior version, due to [a bug in
+Kubernetes](https://github.com/kubernetes/kubernetes/issues/39188) which
+may interfere with applying changes to pod and service port configuration
+correctly.
+
+If, after updating this chart, the coturn pods do not have both a `coturn-udp`
+port and a `coturn-tcp` port, then the coturn `StatefulSet` must be manually
+deleted from the cluster, and then recreated by re-running Helm. Similarly, if
+the coturn `Service` does not have both a `coturn-udp` port and a `coturn-tcp`
+port, this `Service` must be similarly deleted and recreated.

changelog.d/3-bug-fixes/coturn-udp-ports

@@ -0,0 +1,2 @@
+The service definitions in the coturn Helm chart were missing the control plane
+UDP port used by coturn.

charts/coturn/templates/service.yaml

@@ -13,5 +13,9 @@ spec:
     - name: coturn-tcp
       port: {{ .Values.coturnTurnListenPort }}
       targetPort: coturn-tcp
+    - name: coturn-udp
+      port: {{ .Values.coturnTurnListenPort }}
+      targetPort: coturn-udp
+      protocol: UDP
   selector:
     {{- include "coturn.selectorLabels" . | nindent 4 }}

charts/coturn/templates/statefulset.yaml

@@ -107,6 +107,9 @@ spec:
             - name: coturn-tcp
               containerPort: {{ .Values.coturnTurnListenPort }}
               protocol: TCP
+            - name: coturn-udp
+              containerPort: {{ .Values.coturnTurnListenPort }}
+              protocol: UDP
             - name: status-http
               containerPort: {{ .Values.coturnMetricsListenPort }}
               protocol: TCP