Trailing slash healthcheck integration test

(cherry picked from commit ba37bf8387a767216c168e48fc6b6e9e0ed3f39e)

testing/register-test-core/src/main/java/org/opengroup/osdu/register/util/RetrieveApiTestTemplate.java

@@ -117,6 +117,6 @@ public abstract class RetrieveApiTestTemplate extends BaseTestTemplate {
     public void should_returnTrailingOk() throws Exception {
         ClientResponse response =
                 TestUtils.send("api/register/v1/ah/liveness_check/", HttpMethod.GET.name(), this.testUtils.getOpsAccessToken(), "", "");
-        assertEquals(HttpStatus.OK, response.getStatus());
+        assertEquals(expectedOkResponseCode(), response.getStatus());
     }
 }