Switch the ip_migration test away from using TCP to access the RPC
service.
Change-Id: Ic89f59acf60016ae2669b267f09a035413ab22e1
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/388286
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>