In order to support the DCAE component migration from Cloudify orchestration to helm based deployment, require dcaegen2-services-common template to be extended.

Postgress configuration are exposed as secrets through oom/common module.  As certain DCAE microservices retrieve these configuration as ENV need common-service template extended to handle this mapping generic (based on values.yaml - deployment should retrive the secrets based on key provided and map into pod env list)