systemvm: baremetal-vr: reduce memory usage (#2866)

We see a suspicious continuous increase in memory usage. Kind of looks like a memory leak.

One thing noted during debugging is that flask is started in debug mode. This is not best practice for a production system.

Author: resmo

systemvm/debian/opt/cloud/bin/baremetal-vr.py

@@ -156,4 +156,4 @@ def notify_provisioning_done(mac):
 if __name__ == '__main__':
     server = Server()
     shell("iptables-save | grep -- '-A INPUT -i eth0 -p tcp -m tcp --dport 10086 -j ACCEPT' > /dev/null || iptables -I INPUT -i eth0 -p tcp -m tcp --dport 10086 -j ACCEPT")
-    app.run(host='0.0.0.0', port=10086, debug=True)
+    app.run(host='0.0.0.0', port=10086)