allow users to pass service ID or URL to get/update/delete service ops
allow users to pass service ID or URL to get/update/delete service ops

feiskyer/gophercloud,trumant/gophercloud,jamiehannaford/gophercloud,clintonskitson/gophercloud,dudymas/gophercloud,trumant/gophercloud,DSpeichert/gophercloud,clintonskitson/gophercloud,carolynvs/gophercloud,sti-jans/gophercloud,larsbutler/gophercloud,jamiehannaford/gophercloud,rackspace/gophercloud,carolynvs/gophercloud,pratikmallya/gophercloud,timbyr/gophercloud,rackspace/gophercloud,DSpeichert/gophercloud,timbyr/gophercloud,sti-jans/gophercloud,dudymas/gophercloud,larsbutler/gophercloud,jarosser06/gophercloud,pratikmallya/gophercloud,jarosser06/gophercloud,feiskyer/gophercloud