[PR #335/eed4e1f4 backport][stable-1] postgresql_privs: add support for alter default privileges grant usage on schemas

[patchback]

This is a backport of PR #335 as merged into main (eed4e1f).

SUMMARY

Fixes #332
Fixes #333

Test task 332 executes the following queries:

ALTER DEFAULT PRIVILEGES REVOKE ALL ON SCHEMAS FROM \"ansible_db_user3\";
ALTER DEFAULT PRIVILEGES GRANT USAGE ON SCHEMAS TO \"ansible_db_user3\"

Test task 333 executes the following:

ALTER DEFAULT PRIVILEGES REVOKE ALL ON TABLES FROM \"ansible_db_user3\"
ALTER DEFAULT PRIVILEGES GRANT SELECT ON TABLES TO \"ansible_db_user3\"

Is it OK?

not-specified is introduced to preserve backwards compatibility, we can change it as a default in a later major release if needed.

ISSUE TYPE

• Bugfix Pull Request

[codecov]

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[hunleyd]

isn't this a feature @Andersson007 ? as such, no backport.

[Andersson007]

@hunleyd good catch, yep, i think so, let's not backport