[DCAEGEN2][dashboard] Use common secret template for postgres credentials

Even through we use common secret template both passwords are still
hardcoded in common postgres chart but this will be removed as a final
step just like we did for mariadb-galera.

Issue-ID: OOM-2250
Signed-off-by: Krzysztof Opasiak <k.opasiak@samsung.com>
Change-Id: Ic8d8a53093ccdf5f91a26ce9ac2734fe36ccca4f
diff --git a/kubernetes/dcaegen2/components/dcae-dashboard/templates/secret.yaml b/kubernetes/dcaegen2/components/dcae-dashboard/templates/secret.yaml
new file mode 100644
index 0000000..b143034
--- /dev/null
+++ b/kubernetes/dcaegen2/components/dcae-dashboard/templates/secret.yaml
@@ -0,0 +1,16 @@
+{{/*
+# Copyright © 2020 Samsung Electronics
+# #
+# # Licensed under the Apache License, Version 2.0 (the "License");
+# # you may not use this file except in compliance with the License.
+# # You may obtain a copy of the License at
+# #
+# #       http://www.apache.org/licenses/LICENSE-2.0
+# #
+# # Unless required by applicable law or agreed to in writing, software
+# # distributed under the License is distributed on an "AS IS" BASIS,
+# # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# # See the License for the specific language governing permissions and
+# # limitations under the License.
+*/}}
+{{ include "common.secretFast" . }}