Fix test_fapi2getChildTargetsForCDG for Axone
Fix test_fapi2getChildTargetsForCDG for Axone

Port and socket parameters are not relevent for
Axone system.  Skip calling these specific parameter
tests for Axone configuration.

Change-Id: I5418c54e1686d1cff96c8d670b1f461195954044
RTC:201738
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/77313
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot