hs-test: rename address allocator

Type: test

Change-Id: I1745719315d4e0785df5a03aa4312f84c40cb18f
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
diff --git a/extras/hs-test/vppinstance.go b/extras/hs-test/vppinstance.go
index a9b97bc..c871697 100644
--- a/extras/hs-test/vppinstance.go
+++ b/extras/hs-test/vppinstance.go
@@ -236,7 +236,7 @@
 	if veth.addressWithPrefix() == (AddressWithPrefix{}) {
 		var err error
 		var ip4Address string
-		if ip4Address, err = veth.addresser.newIp4Address(veth.peer.networkNumber); err == nil {
+		if ip4Address, err = veth.ip4AddrAllocator.NewIp4InterfaceAddress(veth.peer.networkNumber); err == nil {
 			veth.ip4Address = ip4Address
 		} else {
 			return 0, err