Fix: pin all node dependencies not in Pipfile (#667)

Author: jafreck

aztk/node_scripts/Pipfile

@@ -4,6 +4,9 @@ verify_ssl = true
 name = "pypi"
 
 [packages]
+pip = "==18.0"
+wheel = "==0.32.1"
+setuptools = "==40.4.3"
 azure-batch = "==4.1.3"
 azure-mgmt-batch = "==5.0.0"
 azure-mgmt-storage = "==1.5.0"