Subprocedure should be marked as complete upon failure

ProcedureMember#submitSubprocedure() uses the following check:

      if (!rsub.isComplete()) {
        LOG.error("Subproc '" + procName + "' is already running. Bailing out");
        return false;
      }

If a subprocedure of that name previously ran but failed, its complete field would stay false, leading to early bailout.

A failed subprocedure should mark itself complete.