increase npm installation timeouts

pavelib/prereqs.py

@@ -129,7 +129,7 @@ def node_prereqs_installation():
     Configures npm and installs Node prerequisites
     """
 
-    @timeout(limit=300)
+    @timeout(limit=600)
     def _run_npm_command(npm_command, npm_log_file):
         """
         helper function for running the npm installation with a timeout.