quote shell strs in rvm mod

Conflicts:
	salt/modules/rvm.py
quote input in rbenv mod
pylint fix for quote rbenv mod
shlex.split is used with "None" as parameter which makes split wait for stdinput (contributes to #18632)
Pylint fix
Properly quote some parameters to MacOS dscl
Whitespace fix
Fix mac_user.py module --> Don't quote integers like uid and gid
Pylint fix
Disable zcbuildout tests as they are not running reliably.

These tests are not running reliably, aren't quite testing the functionalty
the way they should, and take too long to run as unit tests. When these get
reinstated, they should be implemented as integration tests instead of unit
tests.
Pylint fix and skip all of the classes
Merge pull request #18997 from rallytime/cp-18346

Backport #18346 to 2014.1
Merge pull request #18999 from rallytime/cp-18442

Backport #18442 and #18871 to 2014.1
Merge pull request #19010 from rallytime/cp-mac_user-fixes

Backport mac_user.py fixes to 2014.1
Merge pull request #19035 from rallytime/cp-19033

Backport #19033 to 2014.1