[Imprv] add functionality <functionality_name> to module <module_name>

[guntis-liepins]

Describe the request
Enable dry run mode with --check

Current behaviour
Currently it seems to ignore this flag and just proceeds with operations like deleting vms regardless of value of this flag.

Expected behaviour
With --check flag module must follow ansible check mode default behaviour:
https://docs.ansible.com/archive/ansible/2.3/playbooks_checkmode.html
i.e. show that it will create or delete objects instead of creating them.

Rationale: In production enviroments most admins want to check playbook first to make sure variables, host groups, etc. is set correctly and then proceed with operation. It is very dangerous to run multi machine complex playbooks without checking it prior production run.

[bhati-pradeep]

Moving it from 1.9.1 -> 1.9.3 as it would need test additions in all integration tests.