Give test binary the knowledge that the clusters we bring up are on cos image for test skipping
@@ -319,6 +319,7 @@ func runTestsWithConfig(pkgDir, k8sDir, gceZone, testFocus, testConfigArg string
"--",
reportArg,
"-provider=gce",
+ "-node-os-distro=cos",
fmt.Sprintf("-gce-zone=%s", gceZone),
testConfigArg)
