Support getting values from secrets in helm chart configuration (#12633)

deploy/helm/templates/statefulset.yaml

@@ -72,6 +72,10 @@ spec:
           envFrom:
             - configMapRef:
                 name: {{ include "appsmith.fullname" . }}
+            {{- if .Values.secretName }}
+            - secretRef:
+                name: {{ .Values.secretName }}
+            {{- end }}
       volumes:
   {{- if not .Values.persistence.enabled }}
       - name: data

deploy/helm/values.yaml

@@ -239,6 +239,8 @@ autoupdate:
   ##
   scheduler: "0 * * * *"
 
+secretName: ""
+
 applicationConfig:
   APPSMITH_OAUTH2_GOOGLE_CLIENT_ID: ""
   APPSMITH_OAUTH2_GOOGLE_CLIENT_SECRET: ""