Allow namespace configuration for different CRD resources in Fission (#2539)

* Allow multiple namespaces for builder manager
* Enable multiple namespaces for executor informers
* Added missing context
* helm chart support for multiple namespaces
* Directly consume map type from GetInformerForNamespaces fn
* Optimize function resolver by choosing namespace-specific informer
* helm chart support for multiple namespaces
* consider default namespace and move duplicate code to helm template
* Improve documentation for fission namespace values

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>
Co-authored-by: shubham bansal <shubhambansaliimtgn@gmail.com>

pkg/apis/core/v1/const.go

@@ -153,3 +153,14 @@ const (
 
 	ClusterRole = "ClusterRole"
 )
+
+const (
+	CanaryConfigResource    = "canaryconfigs"
+	EnvironmentResource     = "environments"
+	FunctionResource        = "functions"
+	HttpTriggerResource     = "httptriggers"
+	KubernetesWatchResource = "kuberneteswatchtriggers"
+	MessageQueueResource    = "messagequeuetriggers"
+	PackagesResource        = "packages"
+	TimeTriggerResource     = "timetriggers"
+)