internal/host/plugin: fix flaky test

Hosts contain IP addresses in string form, whose
order is not defined.

internal/host/plugin/repository_host_test.go

@@ -221,6 +221,9 @@ func TestJob_UpsertHosts(t *testing.T) {
 					cmpopts.SortSlices(func(x, y *Host) bool {
 						return x.GetPublicId() < y.GetPublicId()
 					}),
+					cmpopts.SortSlices(func(x, y string) bool {
+						return x < y
+					}),
 				),
 			)
 
@@ -242,6 +245,9 @@ func TestJob_UpsertHosts(t *testing.T) {
 					cmpopts.SortSlices(func(x, y *Host) bool {
 						return x.GetPublicId() < y.GetPublicId()
 					}),
+					cmpopts.SortSlices(func(x, y string) bool {
+						return x < y
+					}),
 				),
 			)
 			plg := plg
@@ -274,6 +280,9 @@ func TestJob_UpsertHosts(t *testing.T) {
 						got,
 						cmpopts.IgnoreUnexported(Host{}, store.Host{}),
 						cmpopts.IgnoreTypes(&timestamp.Timestamp{}),
+						cmpopts.SortSlices(func(x, y string) bool {
+							return x < y
+						}),
 					),
 				)
 				assert.Empty(