Publish P4Runtime-related protocol artifacts
Publish P4Runtime-related protocol artifacts

Needed to build third-party apps using maven

Change-Id: I3893848320dcd2f17981aff4354612cfc2508a46

opennetworkinglab/onos,opennetworkinglab/onos,oplinkoms/onos,gkatsikas/onos,oplinkoms/onos,gkatsikas/onos,oplinkoms/onos,oplinkoms/onos,gkatsikas/onos,opennetworkinglab/onos,oplinkoms/onos,oplinkoms/onos,gkatsikas/onos,opennetworkinglab/onos,opennetworkinglab/onos,opennetworkinglab/onos,oplinkoms/onos,gkatsikas/onos,gkatsikas/onos