add utility pip-bundler to manage pips of barclamps
added checking pip version before working
Add removed and modified files to the staged changes
Merge pull request #2011 from MirantisDellCrowbar/bug/yum_repodata/master

Bug: cache update to handle deleted files left by yum
Merge pull request #2009 from MirantisDellCrowbar/improve/pip-cache/master

feature: new pip-cache algorithm
Updating release metadata