containers as functions (#1681)

PR adds a new executortype which supports running containers as functions. New CLI under functions is added to create container as functions.

Co-authored-by: Harsh Thakur <harshthakur9030@gmail.com>
Co-authored-by: Sanket Sudake <sanketsudake@gmail.com>

pkg/router/router.go

@@ -236,7 +236,7 @@ func Start(logger *zap.Logger, port int, executorURL string) {
 			zap.Bool("default", displayAccessLog))
 	}
 
-	triggers := makeHTTPTriggerSet(logger.Named("triggerset"), fmap, fissionClient, kubeClient, executor, fissionClient.CoreV1().RESTClient(), &tsRoundTripperParams{
+	triggers := makeHTTPTriggerSet(logger.Named("triggerset"), fmap, fissionClient, kubeClient, executor, &tsRoundTripperParams{
 		timeout:           timeout,
 		timeoutExponent:   timeoutExponent,
 		disableKeepAlive:  disableKeepAlive,