Move beaker to system-tests group
Move beaker to system-tests group

Forgot that beaker breaks ruby 1.8.7 and causes conflicts with
rspec-puppet 2.

gwdg/puppetlabs-corosync,pulecp/puppet-corosync,mrobbert/puppetlabs-corosync,redhat-cip/puppetlabs-corosync,voxpupuli/puppet-corosync,GiooDev/puppetlabs-corosync,Proteon/puppetlabs-corosync,puppet-community/puppet-corosync,fghaas/puppet-corosync,mkrakowitzer/puppetlabs-corosync,mkrakowitzer/puppetlabs-corosync,tdb/puppet-corosync,pulecp/puppet-corosync,wywygmbh/puppetlabs-corosync,Proteon/puppetlabs-corosync,rdo-puppet-modules/puppetlabs-corosync,gwdg/puppetlabs-corosync,puppet-community/puppet-corosync,fuel-infra/puppet-corosync,fghaas/puppet-corosync,rdo-puppet-modules/puppetlabs-corosync,voxpupuli/puppet-corosync,fuel-infra/puppet-corosync,pgotsis/puppet-corosync,mrobbert/puppetlabs-corosync,pgotsis/puppet-corosync,wywygmbh/puppetlabs-corosync,redhat-cip/puppetlabs-corosync,GiooDev/puppetlabs-corosync,tdb/puppet-corosync