cron.raw_cron does not return the cron tab with a newline at the end while file.manage_file does,
if isn't a newline already in the raw_cron output add it in.
Added salt-unity manpages

Closes #13937
Filter the backports package UserWarning about being re-imported
`node_data` is a libcloud Node instance which is unsubscriptable
Exit when the VM name does not match the allowed GCE VM names regex
Fix the `.format()` call indexes
Fixing #15774, argspec was showing additional functions based on the module that was passed.  eg. showing cmd.which and cmd.which_bin when the module cmd.which was passed.  This borrows functionality from the sys.doc function for handling this situation.
Merge pull request #15778 from whiteinge/doc-salt-unity-manpage

Added salt-unity manpages
Properly pass user to syndic command.

Refs #15629 and #15608
Merge pull request #15782 from s0undt3ch/hotfix/2014.7-gce-fix-format-calls

Fix the `.format()` call indexes
Disable `test_issue_10404_ptys_not_released`

Disabled until we can find out why this kills the tests suite with an exit code of 134
Merge pull request #15794 from s0undt3ch/hotfix/disable-problematic-vt-test

Disable `test_issue_10404_ptys_not_released`
fix typo in docstring

s/direcotry/directory/
Merge pull request #15798 from bbinet/patch-1

fix typo in docstring
Add skipIf import to fix the 2014.7 tests
Merge pull request #15804 from rallytime/fix_import

Add skipIf import to fix the 2014.7 tests
Merge pull request #15771 from garethgreenaway/15699_cron_file_newline

Fixes to cron.py state
Update sidebar with newest release candidate
Update release candidate docs with newest rc number
Merge pull request #15805 from basepi/rc2release

Edit docs for v2014.7.0rc2 release