default the job to match latest featuregates

Author: deads2k

pkg/cmd/start/start.go

@@ -127,8 +127,11 @@ func runGather(operator *controller.GatherJob, cfg *controllercmd.ControllerComm
 		}
 		configInformers := configv1informers.NewSharedInformerFactory(configClient, 10*time.Minute)
 
-		desiredVersion := os.Getenv("RELEASE_VERSION")
 		missingVersion := "0.0.1-snapshot"
+		desiredVersion := missingVersion
+		if envVersion, exists := os.LookupEnv("RELEASE_VERSION"); exists {
+			desiredVersion = envVersion
+		}
 
 		// By default, this will exit(0) the process if the featuregates ever change to a different set of values.
 		featureGateAccessor := featuregates.NewFeatureGateAccess(