Don't use listify_ function, when all we want to do is template variables

This was causing a bug in the env module, due to the fact that we now
pass variables for the module through the templating engine combined
with the fact that we split-up the hostvars and setup variables. As a
result, if a variable in the env lookup had the same name as the variable
in Ansible, it would try and template itself over and over again until
the recursion limit would be hit, at which time an empty string was
returned.

Fixes #7396
Add example 'Specify grants composed of more than one word' to the mysql_user module.
Support internal-only ELBs in EC2.
now module searches for update-alternatives vs hardcoding it
Merge pull request #7470 from bcoca/update_bin

now module searches for update-alternatives vs hardcoding it
Merge branch 'multi-word-mysql-grant-example' of https://github.com/webmat/ansible into webmat-multi-word-mysql-grant-example
Merge branch 'webmat-multi-word-mysql-grant-example' into devel
Merge branch 'elb-internal' of https://github.com/asnare/ansible into asnare-elb-internal
Merge branch 'asnare-elb-internal' into devel
Stopped instances can also be terminated
fix UnicodeEncodeError when prompt is unicode.
fix UnicodeEncode error when using pause module with unicode prompt.
Merge branch 'shirou-devel' into devel
Merge pull request #7472 from atlashealth/ec2_terminate_paused_instances

EC2: stopped instances can also be terminated
Fixing absolute path calculation for file module when linking

Fixes #7403
Update `command` description

The docs were a little bit out of date with what commands are available to be run.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.
Merge pull request #7481 from jimi-c/issue_7396_env_lookup

Don't use listify_ function, when all we want to do is template variable...
Merge pull request #7479 from waveaccounting/devel

Update django_manage `command` argument description
Add notes to rax_dns and rax_dns_record to recommend using serial: 1
Merge pull request #7501 from sivel/rax-dns-serial-doc

Add notes to rax_dns and rax_dns_record to recommend using serial: 1