disable TestToScaleN due to it being really flakey with GKE 1.21

test/e2e-tests.sh

@@ -107,7 +107,8 @@ kubectl replace cm "config-gc" -n ${SYSTEM_NAMESPACE} -f ${TMP_DIR}/config-gc.ya
 # Note that we use a very high -parallel because each ksvc is run as its own
 # sub-test. If this is not larger than the maximum scale tested then the test
 # simply cannot pass.
-go_test_e2e -timeout=20m -parallel=300 ./test/scale ${TEST_OPTIONS} || failed=1
+# TODO - Renable once we get this reliably passing on GKE 1.21
+# go_test_e2e -timeout=20m -parallel=300 ./test/scale ${TEST_OPTIONS} || failed=1
 
 # Run HPA tests
 go_test_e2e -timeout=30m -tags=hpa ./test/e2e ${TEST_OPTIONS} || failed=1