Adding necessary mTLS passthrough values for each Gitlab serviceMonitor

Package Merge Request

Package Changes

Removing PeerAuthentication portLevel exceptions for metrics endpoints where mTLS configuration is possible for the following sub-charts:

• registry
• exporter
• webservice
• gitaly
• shell

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab/-/merge_requests/156

For Issue

Closes https://repo1.dso.mil/platform-one/big-bang/apps/developer-tools/gitlab/-/issues/149