Add function check_pillar().
Add function check_pillar().

Checks given pillar-keys for presence and, optionally, for type.
See code/docstrings and http://pastebin.com/MvppytT2 for examples.
Tested on 2014.7.4 on Ubuntu 14.04 (master & minion).

(C) TU Berlin (av.tu-berlin.de) and, of course,
licensed under Apache License, Version 2.0.

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt