comment out unused packages:
comment out unused packages:

 - from fgi-repo, maybe we need but they aren't compiled for EL7
 - some yum repo releases
 - cvmfs - from ansible-role-cvmfs
 - nordugrid-arc - from ansible-role-arc-client

mantti/fgci-tut,CSC-IT-Center-for-Science/fgci-ansible,A1ve5/fgci-ansible,mantti/fgci-tut,mantti/fgci-tut