[CORD-1597] Version plyprotobuf in pip_requirements.txt
[CORD-1597]
Version plyprotobuf in pip_requirements.txt

Change-Id: I641a843e68f66cccd927a791e4a76f87c4c8b9da

opencord/xos,open-cloud/xos,opencord/xos,open-cloud/xos,open-cloud/xos,opencord/xos