Add feature gate

Signed-off-by: Per Goncalves da Silva <[email protected]>

Author: Per Goncalves da Silva

internal/operator-controller/features/features.go

@@ -8,7 +8,8 @@ import (
 const (
 	// Add new feature gates constants (strings)
 	// Ex: SomeFeature featuregate.Feature = "SomeFeature"
-	PreflightPermissions featuregate.Feature = "PreflightPermissions"
+	PreflightPermissions             featuregate.Feature = "PreflightPermissions"
+	SingleOwnNamespaceInstallSupport featuregate.Feature = "SingleOwnNamespaceInstallSupport"
 )
 
 var operatorControllerFeatureGates = map[featuregate.Feature]featuregate.FeatureSpec{
@@ -19,6 +20,15 @@ var operatorControllerFeatureGates = map[featuregate.Feature]featuregate.Feature
 		PreRelease:    featuregate.Alpha,
 		LockToDefault: false,
 	},
+
+	// SingleOwnNamespaceInstallSupport enables support for installing
+	// registry+v1 cluster extensions with single or own namespaces modes
+	// i.e. with a single watch namespace.
+	SingleOwnNamespaceInstallSupport: {
+		Default:       false,
+		PreRelease:    featuregate.Alpha,
+		LockToDefault: false,
+	},
 }
 
 var OperatorControllerFeatureGate featuregate.MutableFeatureGate = featuregate.NewFeatureGate()