Add retries while waiting for SSH on server

Cover baremetal_basic_ops with similar logic as was implemented
at [0]. To wait for SSH with retries after we booted instance.


[0] https://review.opendev.org/c/openstack/ironic-tempest-plugin/+/941054

Change-Id: I459ac157ecb58c17efa654c0b43bbcc0f7cbbb00
1 file changed