Fix python environment failed to launch due to port needs integer not string (#451)

environments/python/server.py

@@ -95,4 +95,4 @@ def setup_logger(loglevel):
 #
 setup_logger(logging.DEBUG)
 app.logger.info("Starting server")
-app.run(host='0.0.0.0', port='8888')
+app.run(host='0.0.0.0', port=8888)

test/test_utils.sh

@@ -167,10 +167,10 @@ helm_install_fission() {
 
     helmVars=image=$image,imageTag=$imageTag,fetcherImage=$fetcherImage,fetcherImageTag=$fetcherImageTag,functionNamespace=$fns,controllerPort=$controllerNodeport,routerPort=$routerNodeport,pullPolicy=Always,analytics=false,logger.fluentdImage=$fluentdImage
 
-    timeout 30 helm_setup
+    timeout 30 bash -c "helm_setup"
 
     echo "Deleting old releases"
-    helm list -q|xargs helm_uninstall_fission
+    helm list -q|xargs -I@ bash -c "helm_uninstall_fission @"
 
     echo "Installing fission"
     helm install		\