Added non existent environment verification
Added non existent environment verification

Change-Id: I346a5b049360f4c499d065812d0bd79e2e614289

satish-avninetworks/murano,olivierlemasle/murano,telefonicaid/murano,ativelkov/murano-api,chenyujie/hybrid-murano,openstack/murano,sergmelikyan/murano,sergmelikyan/murano,telefonicaid/murano,NeCTAR-RC/murano,NeCTAR-RC/murano,satish-avninetworks/murano,DavidPurcell/murano_temp,NeCTAR-RC/murano,olivierlemasle/murano,olivierlemasle/murano,openstack/murano,sajuptpm/murano,DavidPurcell/murano_temp,DavidPurcell/murano_temp,satish-avninetworks/murano,sajuptpm/murano,olivierlemasle/murano,DavidPurcell/murano_temp,ativelkov/murano-api,chenyujie/hybrid-murano,NeCTAR-RC/murano,satish-avninetworks/murano