Fixes #12011

cloudstack: more integration tests and updates

Revert "Add PowerShell exception handling and turn on strict mode."

Apart from ansible-vault create, every vault subcommand is happy to deal
with multiple filenames, so we can check that there's at least one, and
make create check separately that there aren't any extra.

Add PowerShell exception handling and turn on strict mode.

draft bsd intro and bootstrapping

made squashable with_ plugin list configurable

Fix a parsing bug that prevents IPv6 addresses from being used with add_host

Closes #8682

* Add exception handling when running PowerShell modules to provide exception message and stack trace.
* Enable strict mode for all PowerShell modules and internal commands.
* Update common PowerShell code to fix strict mode errors.
* Fix an issue with Set-Attr where it would not replace an existing property if already set.
* Add tests for exception handling using modified win_ping modules.

Support any Mapping for with_dict lookup.

TODO: paging results

* Fixes hostvar serialization issue (#12005)
* Fixes regression in include_vars from within a role (#9498), where
  we had the precedence order for vars_cache (include_vars, set_fact)
  incorrectly before role vars.
* Fixes another bug in which vars loaded from files in the format of
  a list instead of dictionary would cause a failure.

Fixes #9498
Fixes #12005

Use PBKDF2HMAC() from cryptography for vault keys.

moved mandatory back to filters as it does not always return a boolean, it does an exception on failure

Remove unused (copied) _before_comment method