[google|compute] Enable passing the google key as a String
[google|compute] Enable passing the google key as a String

Google::APIClient::KeyUtils.load_from_pkcs12 allows passing the contents
of the PKCS12 key as a String instead of the PKCS12 file location.

Adding a new initialize param (google_key_string) to enable the
automation on those environments where you can not pass a file.

joshisa/fog,icco/fog,rackspace/fog,seanhandley/fog,runtimerevolution/fog,nandhanurrevanth/fog,MSOpenTech/fog,nicolasbrechet/fog,eLobato/fog,unorthodoxgeek/fog,unorthodoxgeek/fog,martinb3/fog,Programatica/fog,dhague/fog,dLobatog/fog,sideci-sample/sideci-sample-fog,seanhandley/fog,martinb3/fog,nandhanurrevanth/fog,nicolasbrechet/fog,brilliomsinterop/fog,mohitsethi/fog,joshisa/fog,cocktail-io/fog,covario-cdiaz/fog,fog/fog,TerryHowe/fog,lwander/fog,10io/fog,duhast/fog,ack/fog,dLobatog/fog,eLobato/fog,pravi/fog,lwander/fog,SpryBTS/fog,plribeiro3000/fog,dhague/fog,dustacio/fog,joshmyers/fog,papedaniel/fog,mavenlink/fog,dtdream/fog,displague/fog,Programatica/fog,mohitsethi/fog,cocktail-io/fog,mavenlink/fog,yyuu/fog,brilliomsinterop/fog,papedaniel/fog,github/fog,adamleff/fog,bryanl/fog,github/fog,b0ric/fog,asebastian-r7/fog,SpryBTS/fog,backupify/fog,zephyrean/fog,mitchlloyd/fog,adecarolis/fog,10io/fog,sapcc/fog,nandhanurrevanth/fog,ManageIQ/fog,rackspace/fog,pyama86/fog,icco/fog,zephyrean/fog,surminus/fog,glennpratt/fog,covario-cdiaz/fog,fog/fog,brilliomsinterop/fog,TerryHowe/fog,theforeman/fog,alphagov/fog,theforeman/fog,bryanl/fog,nalabjp/fog,adamleff/fog,phillbaker/fog,kongslund/fog,duhast/fog,ManageIQ/fog,alphagov/fog,b0ric/fog,surminus/fog,sapcc/fog,mitchlloyd/fog,dtdream/fog,nalabjp/fog,yyuu/fog,dustacio/fog,runtimerevolution/fog,Ladas/fog,zephyrean/fog,ack/fog,phillbaker/fog,kongslund/fog,joshmyers/fog,asebastian-r7/fog,phillbaker/fog,plribeiro3000/fog,pravi/fog,glennpratt/fog,adecarolis/fog,backupify/fog,sideci-sample/sideci-sample-fog,displague/fog,MSOpenTech/fog,Ladas/fog,pyama86/fog