Fixes #7652

made nested lists diff lengths - caused confusion

Fixes #7598

As a relatively-new user to Ansible, the Nested Loop example made me think it was looping through both lists together (`alice` would go with `clientdb`, `bob` with `employeedb`) and not actually nested. I realize now I was just being stupid, but I feel making the example lists different lengths would prevent such confusion in the future.

Also cleaning up integration tests that had checks for the empty item
attribute in certain results.

Fixes #7535

Add primary group in the first user module doc example

Fix typo in CHANGE MASTER TO syntax

Don't use deprecated BaseException.message in keystone_user

fixes error "failed to parse: <attribute 'message' of 'exceptions.BaseException' objects>
TypeError: <attribute 'message' of 'exceptions.BaseException' objects> is not JSON serializable"

Also update rax to mirror meta value normalization from rax_meta

rax module: Return untouhced servers with exact_count

updating ec2_group example, to be more consistent with parameter names

template.py: Handle purposely raised exceptions in lookup()

Support checking for su user to atomic_move

If a lookup plugin is run by the lookup() template method it should pass
along any AnsibleError (or child exception classes) rather than just eat
them.  These exceptions are purposely raised by the plugin.

corrected doc example, non existing fact to the 2 it had 'merged'

Using sets for these operations is dangerous because sets cannot contain
certain object types (such as lists) and their iteration order is
undefined.

Fixes #7596

Fixes #7585

Fixes #7515
Fixes #7537

Merge branch 'fix_mutable_inventory_vars' of https://github.com/banterchat/ansible into banterchat-fix_mutable_inventory_vars

warn if remote SSL cert is not checked in linode

added solaris fact detection for ansible_pkg_mgr

Fixed documentation for etype parameter on acl module.

Fixes #7553

Remove duplicate table of contents in Conditionals