Merge pull request #12 from crowbar/release/pebbles/master

pull last changes
add redhat and centos support
fix repo url
fix repo
fix service for rhel
there is no --force-yes for yum
wrong syntax
fix for smoketest
style fix
Merge pull request #126 from MirantisDellCrowbar/feature/DCB-149/pebbles/master

https://github.com/crowbar/barclamp-glance/pull/126

Merged by devtool for rajinir