PMIx server direct modex response with error status is broken

[artpol84]

In case direct modex response cannot be satisfied send_error() is called that packs status and peer id in the reply (https://github.com/open-mpi/ompi/blob/v2.0.x/orte/orted/pmix/pmix_server.c#L385:L397)
At the receiver side a "hotel room number" is expected to proceed correctly:
https://github.com/open-mpi/ompi/blob/v2.0.x/orte/orted/pmix/pmix_server.c#L597:L615.

[artpol84]

It seems like this Issue can be closed as all PRs are merged.