added optional groups in users privileges

[aksenk]

Now we can add users to the specified groups if required

[gclough]

@aksenk, "groups" isn't listed as a parameter:

https://docs.ansible.com/ansible/2.6/modules/postgresql_user_module.html#parameters

If there is something I'm missing, then could you update the doco with some examples of usage, and add some CI tests to ensure it's working.

[aksenk]

d contested?

Hi @gclough.

Thanks for your answer.

This parameter is present, but was added only in version 2.9
https://docs.ansible.com/ansible/2.9/modules/postgresql_user_module.html#parameter-groups

What can we do about it?

[MrMegaNova]

With newer versions I think this PR should be merged
Ansible 2.9 is now an older version, actually the oldest version we test on this role