Resolve "Use Namespace For Jdbc Connection String"

General MR

Summary

Adds the namespace to the jdbc connection string. This allows the dns name to resolve inside the cluster from other namespaces.

Relevant logs/screenshots

dbcreds after change

The namespace .mattermost is appended to the hostname

The operator pulls out the dns name from DB_CONNECTION_CHECK_URL and verifies it resolves. With the namespace now a part of url, the name resolution work from inside the mattermost-operator namespace.

DB_CONNECTION_CHECK_URL: postgres://redacted:redacted@mattermost-postgresql.mattermost:5432/mattermost?connect_timeout=10&sslmode=disable                                                   
DB_CONNECTION_STRING: postgres://redacted:redacted@mattermost-postgresql.mattermost:5432/mattermost?connect_timeout=10&sslmode=disable                                                      

Linked Issue

for issue #260 (closed)

Upgrade Notices

n/a