Service type ClusterIP - Controller port forward through CLI (#431)

setting serviceType to ClusterIP as default for fission controller and corresponding changes in fission cli to be able to port-forward the controller pod.

test/build_and_test.sh

@@ -17,6 +17,7 @@ FLUENTD_IMAGE=gcr.io/fission-ci/fluentd
 BUILDER_IMAGE=$REPO/builder
 TAG=test
 PRUNE_INTERVAL=1 # this variable controls the interval to run archivePruner. The unit is in minutes.
+ROUTER_SERVICE_TYPE=ClusterIP
 
 dump_system_info
 
@@ -36,4 +37,4 @@ build_and_push_fluentd $FLUENTD_IMAGE:$TAG
 
 build_fission_cli
 
-install_and_test $IMAGE $TAG $FETCHER_IMAGE $TAG $FLUENTD_IMAGE $TAG $PRUNE_INTERVAL
+install_and_test $IMAGE $TAG $FETCHER_IMAGE $TAG $FLUENTD_IMAGE $TAG $PRUNE_INTERVAL $ROUTER_SERVICE_TYPE