Apply template on all keys of operatorconfiguration

[LordGaav]

This allows one to specify go templates in every setting applied to the OperatorConfiguration. This in turn allows me to do something like this:

global:
    s3:
        endpoint: https://s3.example.com
        access_key_id: xxx
        secret_access_key: xxx
        bucket: xxx
postgres-operator:
    configLogicalBackup:
        logical_backup_s3_endpoint: '{{ .Values.global.s3.endpoint }}'
        logical_backup_s3_access_key_id: '{{ .Values.global.s3.access_key_id }}'
        logical_backup_s3_secret_access_key: '{{ .Values.global.s3.secret_access_key }}'
        logical_backup_s3_bucket: '{{ .Values.global.s3.bucket }}'
some-other-chart:
    some-other-key: '{{ .Values.global.s3.bucket }}'

I applied tpl to all keys, because even though I only required logical backup for my use case, I see no reason to not add this to all keys.

[FxKu]

:+1:

[idanovinda]

👍

[FxKu]

Thanks @LordGaav for your contribution.