Enable prefix based routing (#2047)

* Enable prefix based routing

Signed-off-by: Harsh Thakur <harshthakur9030@gmail.com>

* Optimize checking condition

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

* Disable few tests

* disable router modification for now

* run code generator

* Collect fission dump in CI

* Enable all tests back

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

* Remove unwanted code

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

* Add prefix support at more places and couple of todo's

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

* Few more changes

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

* Improve function trim support

* Support for prefix based urls in fission function test

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

* multi route for fission function test

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

* Improve validations in trigger creations

* Adjust leading / in url from fission

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

* Change suburl to subpath for function test

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

Co-authored-by: Sanket Sudake <sanketsudake@gmail.com>

pkg/fission-cli/util/util.go

@@ -342,3 +342,11 @@ func UpdateMapFromStringSlice(dataMap *map[string]string, params []string) bool
 	}
 	return updated
 }
+
+func UrlForFunction(name, namespace string) string {
+	prefix := "/fission-function"
+	if namespace != metav1.NamespaceDefault {
+		prefix = fmt.Sprintf("/fission-function/%s", namespace)
+	}
+	return fmt.Sprintf("%v/%v", prefix, name)
+}