Support postgres_privs module

[goldenberg]

Addresses #175 to use the builtin postgresql_privs module to grant and revoke privileges on objects and schemas.

• Added Ensure postgres is running task based on users.yml. Let me know if that's excessive.
• Modified README.md with an example. Should we modify the postgresql_user_privileges example to get rid of the privilege string format since so it's not redundant now? Or is there still a valid use case for that format?

[goldenberg]

I wanted to check in to see if we can get this merged?

Thanks!

[jesselang]

This looks like a great addition! CWGTM?

[goldenberg]

Thanks! That'd be great.

[cnf]

Any progress on this? I need it to create read-only users.

[UnderGreen]

Why you want to check postgresql status here? It's not a task about privileges.

[gclough]

Is this the same as #134? Which one should be merged?

[rlex]

Is there any updates on this PR? I was thinking about making pretty much the same PR before i discovered this one got stuck.

[github-actions]

This pr has been marked 'stale' due to lack of recent activity. If there is no further activity, the issue will be closed in another 30 days. Thank you for your contribution!