[android] enable ping sender (#6402)
[android] enable ping sender (#6402)


srickardti/openthread,srickardti/openthread,abtink/openthread,jwhui/openthread,openthread/openthread,openthread/openthread,jwhui/openthread,srickardti/openthread,openthread/openthread,jwhui/openthread,jwhui/openthread,abtink/openthread,srickardti/openthread,abtink/openthread,abtink/openthread,openthread/openthread