Add fuel-packages to requirements-rpm.txt

Add  packages shotgun,fuelmenu,nailgun-agent,nailgun-mcagents,nailgun-net-check,
 python-fuelclient

Remove hardcode version for rubygem-yajl-ruby

Change-Id: Ia0822edbaa6f11905293fa1cfede4fb720c0e348
Merge "Add fuel-packages to requirements-rpm.txt"