Task: postgres-operator installation optional

[mwallschlaeger]

Task Description

Currently, there are two ways of defining a database in geonode-k8s.

1. use an external database. requires to configure credentials for the external database
2. use postgres-operator. This installs the postgres-operator itself and creates kubernetes postgresql objects.

But on production environments we're using postgres operator for different applications so the geonode-k8s installation can assume that a postgres-operator is already available in the kubernetes cluster. Therefore there should be a switch to install the postgres-operator while installing the geonode-k8s chart or only setup postgresql objects.

Additional Information

Any additional information or context that may be helpful in completing the task.