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

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

pkg/fission-cli/flag/flag.go

@@ -134,6 +134,7 @@ var (
 	HtFnWeight          = Flag{Type: IntSlice, Name: flagkey.HtFnWeight, Usage: "Weight for each function supplied with --function flag, in the same order. Used for canary deployment"}
 	HtFnFilter          = Flag{Type: String, Name: flagkey.HtFilter, Usage: "Name of the function for trigger(s)"}
 	HtPrefix            = Flag{Type: String, Name: flagkey.HtPrefix, Usage: "Prefix with which functions are exposed. NOTE: Prefix takes precedence over URL/RelativeURL"}
+	HtKeepPrefix        = Flag{Type: Bool, Name: flagkey.HtKeepPrefix, Usage: "Keep the prefix in the URL while forwarding request to the function"}
 
 	TtName   = Flag{Type: String, Name: flagkey.TtName, Usage: "Time Trigger name"}
 	TtCron   = Flag{Type: String, Name: flagkey.TtCron, Usage: "Time trigger cron spec with each asterisk representing respectively second, minute, hour, the day of the month, month and day of the week. Also supports readable formats like '@every 5m', '@hourly'"}

pkg/fission-cli/flag/key/key.go

@@ -87,6 +87,7 @@ const (
 	HtFnWeight          = "weight"
 	HtFilter            = HtFnName
 	HtPrefix            = "prefix"
+	HtKeepPrefix        = "keepprefix"
 
 	TtName   = resourceName
 	TtCron   = "cron"