Removing package repository setup from common.rb

Package repository configuration is already handled in openstack-common,
so it does not need to be handled in this cookbook.

Change-Id: I386fb71f5e8c9401ec8a3002239d89e2098b1c20
Closes-Bug: #1300468
Bugfix run_command status check

Change-Id: Iccd6f628589961966fc9ee1555617f04f53e9d55
Closes-Bug: #1320033