Handle NotFound error when checking if the instance group exists
Handle NotFound error when checking if the instance group exists

mad01/kops,kubernetes/kops,gambol99/kops,robinpercy/kops,robinpercy/kops,andrewsykim/kops,chrislovecnm/kops,tsupertramp/kops,robinpercy/kops,mad01/kops,aledbf/kops,blakebarnett/kops,gambol99/kops,aledbf/kops,chrislovecnm/kops,mad01/kops,tsupertramp/kops,mad01/kops,gambol99/kops,chrislovecnm/kops,andrewsykim/kops,kubernetes/kops,gambol99/kops,chrislovecnm/kops,aledbf/kops,aledbf/kops,andrewsykim/kops,blakebarnett/kops,blakebarnett/kops,andrewsykim/kops,robinpercy/kops,justinsb/kops,justinsb/kops,blakebarnett/kops,kubernetes/kops,justinsb/kops,tsupertramp/kops,tsupertramp/kops