Create a new map of namespaces

Signed-off-by: Marcos Yacob <marcos.yacob@hpe.com>

Author: Marcos Yacob

api/v1alpha1/controllermanagerconfig_loader.go

@@ -47,7 +47,7 @@ func addOptionsFromConfigSpec(o *ctrl.Options, configSpec ControllerManagerConfi
 }
 
 if len(o.Cache.DefaultNamespaces) == 0 && configSpec.CacheNamespace != "" {
-o.Cache.DefaultNamespaces[configSpec.CacheNamespace] = cache.Config{}
+o.Cache.DefaultNamespaces = map[string]cache.Config{configSpec.CacheNamespace: {}}
 }
 
 if o.Metrics.BindAddress == "" && configSpec.Metrics.BindAddress != "" {