[freeipa PR#2046][opened] Apply validate_doc() to NO_CLI commands

[stanislavlevin]

   URL: https://github.com/freeipa/freeipa/pull/2046
Author: stanislavlevin
 Title: #2046: Apply validate_doc() to NO_CLI commands
Action: opened

PR body:
"""
For now validate_doc() checks NO_CLI commands only.

From validate_doc:
```
 * Every command must have documentation
and it must be marked for international translation

* Every module hosting a command must have documentation
and it must be marked for international translation

* Every module topic must be marked for international translation
```

So, to prevent from NO_CLI commands have no translatable
description or have no one at all in Web UI API Browser 
validation of ```__doc__``` is required.

https://pagure.io/freeipa/issue/7592
Additionally, 
```
1 commands without doc, 0 commands whose doc is not i18n
1 modules without doc, 2 modules whose doc is not i18n
```
are fixed.

"""

To pull the PR as Git branch:
git remote add ghfreeipa https://github.com/freeipa/freeipa
git fetch ghfreeipa pull/2046/head:pr2046
git checkout pr2046