Disable caching of connections from router to function pods (#742)

A temporary fix for #723 which needs to be optimized in future. Disables caching of connections from the router to function pod/service.

test/tests/test_fn_update/test_configmap_update.sh

@@ -1,6 +1,4 @@
 #!/bin/bash
-# Disabling for https://github.com/fission/fission/issues/723 will enable after resolution/cluster upgrade
-#test:disabled
 
 set -euo pipefail
 

test/tests/test_fn_update/test_nd_pkg_update.sh

@@ -1,6 +1,4 @@
 #!/bin/bash
-# Disabling for https://github.com/fission/fission/issues/723 will enable after resolution/cluster upgrade
-#test:disabled
 
 set -euo pipefail
 

test/tests/test_fn_update/test_secret_update.sh

@@ -1,6 +1,4 @@
 #!/bin/bash
-# Disabling for https://github.com/fission/fission/issues/723 will enable after resolution/cluster upgrade
-#test:disabled
 
 set -euo pipefail