Bring back shared_runners_available? method since it is overriden in EE
Bring back shared_runners_available? method since it is overriden in EE

axilleas/gitlabhq,axilleas/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,dreampet/gitlab,iiet/iiet-git,iiet/iiet-git,mmkassem/gitlabhq,stoplightio/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,iiet/iiet-git,iiet/iiet-git,mmkassem/gitlabhq,stoplightio/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,axilleas/gitlabhq,jirutka/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq