completed create/delete VG tests though need to implement editObject to mark VGs
completed create/delete VG tests though need to implement editObject to mark VGs

eirslett/softlayer-go,TheWeatherCompany/softlayer-go,maximilien/softlayer-go,mattcui/softlayer-go,eirslett/softlayer-go,maximilien/softlayer-go,TheWeatherCompany/softlayer-go,mattcui/softlayer-go,jianqiu/softlayer-go,jianqiu/softlayer-go