Updating requirements file so that non local builds work.

Change-Id: Ie60009fe9bf200e90420ed473e3756e017857f48
diff --git a/python/requirements.txt b/python/requirements.txt
index 6df1689..f2d84f1 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -64,5 +64,5 @@
 pexpect==4.6.0
 python-consul==0.6.2
 afkak==3.0.0.dev20181106
-pyvoltha==0.1.9
-voltha-protos==0.1.3
+pyvoltha==0.2.0
+voltha-protos==0.1.4