Fixes #7548

The etype parameter just had a copy of the default parameter documentation.
Changed it to reflect what it really is for.

directory

The docs were a little bit out of date with what commands are available to be run. They also didn't explain that you could pass custom commands - I almost went down the path of trying to run our custom management commands with the generic Ansible `command` module.

Fixes #7403

Also added some error handling to the fetch_url() call in the
apt_repository module, so that failures to look up the PPA info
are properly handled.

Fixes #7322

Fixes #7414

Fixes #7416

Remove unsupported 'install' argument

If the module directory is not writable/executable to the current user
(most likely because of a sudo to a non-root user), the ssh_wrapper
will be created in the default location for mkstemp() calls. To facilitate
the deletion of these new files, a new mechanism for cleaning up files
created by the module was also added.

Fixes #7375

When we hard-link a file, and the link path already exists, give the link path in the error message instead of the source

When a symlink fails because the path already exists and force=no, we should output path in the error message instead of source.

Fixes #7385

ENV variable value could contain '=' (for example mysql://host/db?pool=10)

While the encrypted parameter's documentation clearly states that it needs to
be set, if you are focused on the password parameter's documentation, there's
nothing to draw your attention to the fact that encrypted may also need to be
set.

Fixes #7385

Fixes #7363

This fixed the just committed change handling non existent Ghost state.

This doesn't exist anymore and causes ansible to throw a KeyError