tests: Add functional test for out-of-process device emulation

tests: Add functional test for out-of-process device emulation

Runs the Avocado acceptance test to check if a
remote lsi53c895a device gets identified by the guest.

Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[WR: Refactored code]
Signed-off-by: Willian Rampazzo <willianr@redhat.com>
Tested-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Cleber Rosa <crosa@redhat.com>
Tested-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20210303205320.146047-3-willianr@redhat.com>
Signed-off-by: Cleber Rosa <crosa@redhat.com>