This series adds a new migration test through RDMA.
To correct uses of migration need to add a new function to work
with RDMA service.
And as a part of migration tests, the series makes small updates to EXEC
migration and to _get_free_port function

V2:
 - improves commit message in Acceptance test: adds param 'address'
   in _get_free_port
 - provides import check for netifaces library
 - makes fix to _get_ip_rdma function
 - adds skip to test if not upload python module

Oksana Vohchana (4):
  Acceptance test: adds param 'address' in _get_free_port
  Acceptance test: EXEC migration
  Acceptance test: provides new functions
  Acceptance test: provides to use RDMA transport for migration test

 tests/acceptance/migration.py | 41 +++++++++++++++++++++++++++++++++--
 1 file changed, 39 insertions(+), 2 deletions(-)

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2.21.1