Fixup: Alternate method to get server ip for boxes with older nc utility
Fixup: Alternate method to get server ip for boxes with older nc utility

Looks like commit 093f15ecd9642e56c54ae3893074423c726bb16e accidently removed
the logic to fallback to alternate method to determine server ip when
tests run in an boxes(SUT) with older nc utility,
refer commit 403d141391f5934f548bb1d40049cfd37a020527,
this fix address it by reverting the logic back to work properly.

Signed-off-by: Satheesh Rajendran <6cd5ae2a5a4b4da3e215e51681425875ba7a2ad6@linux.vnet.ibm.com>

open-power/op-test-framework,open-power/op-test-framework,open-power/op-test-framework