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/generated/applyconfiguration/core/v1/timetriggerspec.go

@@ -27,6 +27,8 @@ import (
 type TimeTriggerSpecApplyConfiguration struct {
 	Cron                                 *string `json:"cron,omitempty"`
 	*FunctionReferenceApplyConfiguration `json:"functionref,omitempty"`
+	Method                               *string `json:"method,omitempty"`
+	Subpath                              *string `json:"subpath,omitempty"`
 }
 
 // TimeTriggerSpecApplyConfiguration constructs an declarative configuration of the TimeTriggerSpec type for use with
@@ -81,3 +83,19 @@ func (b *TimeTriggerSpecApplyConfiguration) ensureFunctionReferenceApplyConfigur
 		b.FunctionReferenceApplyConfiguration = &FunctionReferenceApplyConfiguration{}
 	}
 }
+
+// WithMethod sets the Method field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Method field is set to the value of the last call.
+func (b *TimeTriggerSpecApplyConfiguration) WithMethod(value string) *TimeTriggerSpecApplyConfiguration {
+	b.Method = &value
+	return b
+}
+
+// WithSubpath sets the Subpath field in the declarative configuration to the given value
+// and returns the receiver, so that objects can be built by chaining "With" function invocations.
+// If called multiple times, the Subpath field is set to the value of the last call.
+func (b *TimeTriggerSpecApplyConfiguration) WithSubpath(value string) *TimeTriggerSpecApplyConfiguration {
+	b.Subpath = &value
+	return b
+}