AMBARI-5832. "service_name" field unavailable from Hosts API (dlysnichenko)

ambari-server/src/main/resources/properties.json

@@ -72,6 +72,7 @@
         "HostRoles/stale_configs",
         "HostRoles/desired_admin_state",
         "HostRoles/maintenance_state",
+        "HostRoles/service_name",
         "_"
     ],
     "Configuration":[

ambari-server/src/test/java/org/apache/ambari/server/controller/internal/HostComponentResourceProviderTest.java

@@ -254,7 +254,7 @@ public class HostComponentResourceProviderTest {
         EasyMock.<Set<ServiceComponentHostRequest>>anyObject())).andReturn(nameResponse).once();
     expect(managementController.updateHostComponents(
         AbstractResourceProviderTest.Matcher.getHostComponentRequestSet(
-            "Cluster102", null, "Component100", "Host100", null, "STARTED"),
+            "Cluster102", "Service100", "Component100", "Host100", null, "STARTED"),
             eq(mapRequestProps), eq(false))).andReturn(response).once();
     
     expect(resourceProviderFactory.getHostComponentResourceProvider(anyObject(Set.class),