Update requirements.

automation/network/mac_metrics.py

@@ -28,7 +28,7 @@ from flask import Flask
 from flask import Response
 import json
 import CLEUCreds
-from gevent.wsgi import WSGIServer
+from gevent.pywsgi import WSGIServer
 from cleu.config import Config as C
 
 

automation/network/poll_macs_requirements.txt

@@ -3,6 +3,8 @@ cffi==1.13.2
 Click==7.0
 cryptography==2.8
 Flask==1.1.1
+gevent==1.4.0
+greenlet==0.4.15
 ipaddress==1.0.23
 itsdangerous==1.1.0
 Jinja2==2.10.3