GCE: log when loading from GOOGLE_APPLICATION_CREDENTIALS
GCE: log when loading from GOOGLE_APPLICATION_CREDENTIALS

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