Fix some rpm packages issues
Fix some rpm packages issues

 - Fix the changelog warning due to the mismatch of the version
 - Fix the python interpreter location path
 - Remove epel dependencies (Create doc with python-markdown)

Change-Id: I1f58d1a569775643b8d4e4b82f78bf2e5f2dcac3

centos-opstools/opstools-ansible,centos-opstools/opstools-ansible