VOL-1830 setting openonu use use etcd for storing mib sync entities

Change-Id: Ie08c5272e7f612f8bb3e535bfa7d2630eacf98a5
diff --git a/python/requirements.txt b/python/requirements.txt
index 4284338..b264018 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -60,4 +60,4 @@
 python-consul==0.6.2
 afkak==3.0.0.dev20181106
 voltha-protos>=0.1.4
-pyvoltha==0.2.3
+pyvoltha==0.2.4