pg_SUITE:empty_group_by_remote_leave
pg_SUITE:empty_group_by_remote_leave

Local pg:get_members checks after remote join/leave calls
seems like that need sync_via to make sure the changes have propagated
back to the local node.

erlang/otp,bjorng/otp,erlang/otp,erlang/otp,bjorng/otp,erlang/otp,erlang/otp,bjorng/otp,bjorng/otp,erlang/otp,erlang/otp,bjorng/otp,bjorng/otp,erlang/otp,bjorng/otp,erlang/otp,bjorng/otp,erlang/otp,bjorng/otp,bjorng/otp