Install rubygem-app_config in --from-git mode
Install rubygem-app_config in --from-git mode

It's required by the crowbar barclamp

SUSE-Cloud/crowbar,vwallfahrer/crowbar,mmnelemane/crowbar,aplanas/crowbar,MaximilianMeister/crowbar,aplanas/crowbar,rhafer/crowbar,mmnelemane/crowbar,MaximilianMeister/crowbar,nkrinner/crowbar,nkrinner/crowbar,rsalevsky/crowbar,SUSE-Cloud/crowbar,aspiers/crowbar,crowbar/crowbar,aspiers/crowbar,rhafer/crowbar,crowbar/crowbar,rhafer/crowbar,toabctl/crowbar,dirkmueller/crowbar,tserong/crowbar,toabctl/crowbar,tserong/crowbar,dirkmueller/crowbar,rsalevsky/crowbar,vwallfahrer/crowbar