Added the 'master' grain to give the minion it's master
fix bad & tab indentation reported by pylint
Fixed a grammar issue in the comments
add whitespace around operators based on pylint report
improve pillar.cobbler.ext_pillar()

avoid mutable default argument value
approximate a dict comprehension
add missing .format() in modules.img.mnt_image
fix typo in states.img.umount_image: 'fomat' -> 'format'
fix some typos / capitalization in minion.py
version.py: rename exception so distinct from stderr string
cli.batch: fix typo, use idiomatic var name
fix apparent typo in modules.file.manage_file
fixes to modules.mongodb.db_exists
Avoid `KeyError`. Refs 6cf74b7
Merge pull request #4684 from hulu/minion-typos

fix some typos / capitalization in minion.py
Merge pull request #4683 from hulu/img-mnt_image-fix

Minor fixes in modules.img
Merge pull request #4694 from s0undt3ch/develop

Avoid `KeyError`. Refs 6cf74b7
Add safe_walk function to utils
Connect new safe_walk into the file server
Fix issue where safe_walk would skip files
Merge pull request #4675 from Learnosity/master_grain

Added the 'master' grain to give the minion its master