Add support for expunging node in cloudstack.
Add support for expunging node in cloudstack.

The method takes a hash, if expunge is set to true in that hash
the vm is expunged immediately. Expunge is false by default.

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