* add team-barrier implementation
add a team-barrier API and implementation in the IPC and RO conduit.
Clean up some of the logic in the RO Conduit to distinguish between
sync, sync_all, barrier, and barrier_all.
* add team_barrier_tests to functional tests
[ROCm/rocshmem commit: bcbc42e78f]
Edgar Gabriel
avinashkethineedi
Brandon Potter
Yiltan Temucin