Option to keep or remove prefix when router triggers prefix based function (#2133)

Signed-off-by: Sanket Sudake <sanketsudake@gmail.com>

pkg/apis/core/v1/types.go

@@ -664,6 +664,11 @@ type (
 		// +optional
 		Prefix *string `json:"prefix,omitempty"`
 
+		// When function is exposed with Prefix based path,
+		// keepPrefix decides whether to keep or trim prefix in URL while invoking function.
+		// +optional
+		KeepPrefix bool `json:"keepPrefix,omitempty"`
+
 		// Use Methods instead of Method. This field is going to be deprecated in a future release
 		// HTTP method to access a function.
 		// +optional

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

@@ -236,6 +236,7 @@ var map_HTTPTriggerSpec = map[string]string{
 	"host":          "Deprecated: the original idea of this field is not for setting Ingress. Since we have IngressConfig now, remove Host after couple releases.",
 	"relativeurl":   "RelativeURL is the exposed URL for external client to access a function with.",
 	"prefix":        "Prefix with which functions are exposed. NOTE: Prefix takes precedence over URL/RelativeURL. Note that it does not treat slashes specially (\"/foobar/\" will be matched by the prefix \"/foobar\").",
+	"keepPrefix":    "When function is exposed with Prefix based path, keepPrefix decides whether to keep or trim prefix in URL while invoking function.",
 	"method":        "Use Methods instead of Method. This field is going to be deprecated in a future release HTTP method to access a function.",
 	"methods":       "HTTP methods to access a function",
 	"functionref":   "FunctionReference is a reference to the target function.",