Remove exclusions of Ansible-lint issues 204 and 301

[arvindsh]

In PR #340 we excluded the above 2 issues (flagged by Ansible-lint) due to risk / effort / reward considerations. This issue is therefore created to track the TODO items to eventually address the underlying reasons for these 204 and 301 issues.

[arvindsh]

With current (August 2021) versions of ansible-lint, these obscure numeric codes are deprecated in favor of text labels which more clearly indicate the purpose of the exclusion. Due to behavior changes in ansible-lint 5.1.2 an additional exclusion had to added, such that we now exclude: no-changed-when,risky-file-permissions,unnamed-task,var-naming.

Hence, adding a TODO issue to track addressing as many of these as possible in due course of time.