this should return 0 to indicate a non-failure when check_mode is True
Restore #6484 reverted by c751168.
Fix typo in playbook roles doc
Added examples to the shell module
Added examples to the command module
Remove redundant 'self.user or' added by 0f91add
Merge pull request #7909 from Elemecca/t-apt-list

Restore #6484 (YAML lists in apt) reverted by c751168.
Merge pull request #7912 from adrienbrault/patch-1

Fix typo in playbook roles doc
Merge pull request #7915 from gitaarik/devel

Add examples for `shell` and `command` modules.
Merge pull request #7249 from jfchevrette/implement-group-checking-if-state-present

Allow group module to handle check_mode properly when group.state=present and group already exists
Updating the other classes in the group module to match #7249
Check to make sure key exists in tag list before using it

Fixes #7910
Changed auth args in openstack modules
Changed wait to true/false in nova compute
Added region to nova keypair, fixed example
Fixes to glance image
Added nova security groups
Change keystone file name
Added cinder volume
Added nova snapshot