Add method and subpath flags to timetrigger object for triggering a function (#3017)

* Update timetrigger crd and add method and subpath fields in spec.
Update fission-cli to accept user input for method and subpath fields.
Update publisher package to utilize these fields for triggering a function.
Update timer controller to use method and subpath fields for publishing a request.
Add a new test TestPublisherSubpath in pulisher package.

Signed-off-by: Md Soharab Ansari <soharab.ansari@infracloud.io>

* Use kubebuilder default annotation.
Update test for fission-cli timetrigger create, update command to support method and subpath flags.

Signed-off-by: Md Soharab Ansari <soharab.ansari@infracloud.io>

---------

Signed-off-by: Md Soharab Ansari <soharab.ansari@infracloud.io>

pkg/apis/core/v1/types.go

@@ -821,6 +821,17 @@ type (
 
 		// The reference to function
 		FunctionReference `json:"functionref"`
+
+		// HTTP Method for trigger, ex : GET, POST, PUT, DELETE, HEAD (default: "POST")
+		// +kubebuilder:default:="POST"
+		// +optional
+		Method string `json:"method,omitempty"`
+
+		// Subpath to trigger a specific route if function
+		// internally supports routing, (default: "/")
+		// +kubebuilder:default:="/"
+		// +optional
+		Subpath string `json:"subpath,omitempty"`
 	}
 	// FailureType refers to the type of failure
 	FailureType string

pkg/apis/core/v1/zz_generated.swagger_doc_generated.go

@@ -428,6 +428,8 @@ var map_TimeTriggerSpec = map[string]string{
 	"":            "TimeTriggerSpec invokes the specific function at a time or times specified by a cron string.",
 	"cron":        "Cron schedule",
 	"functionref": "The reference to function",
+	"method":      "HTTP Method for trigger, ex : GET, POST, PUT, DELETE, HEAD (default: \"POST\")",
+	"subpath":     "Subpath to trigger a specific route if function internally supports routing, (default: \"/\")",
 }
 
 func (TimeTriggerSpec) SwaggerDoc() map[string]string {