Fixed sonar issue in Cloudify comp

Fixed Sonar reported vulnerability in HttpClientConectior java file

Issue-ID: SO-981
Change-Id: I45d0bc74252330ccc828cd8cee4aabd59e581ca9
Signed-off-by: GOPINATH MATHIVANAN <gopinath.mathivanan@in.ibm.com>
diff --git a/cloudify-client/src/main/java/org/onap/so/cloudify/connector/http/HttpClientConnector.java b/cloudify-client/src/main/java/org/onap/so/cloudify/connector/http/HttpClientConnector.java
index a10945e..6214cc5 100644
--- a/cloudify-client/src/main/java/org/onap/so/cloudify/connector/http/HttpClientConnector.java
+++ b/cloudify-client/src/main/java/org/onap/so/cloudify/connector/http/HttpClientConnector.java
@@ -15,6 +15,7 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
+ * Modifications Copyright (C) 2018 IBM.
  * ============LICENSE_END=========================================================
  */
 
@@ -64,8 +65,8 @@
 
 public class HttpClientConnector implements CloudifyClientConnector {
 
-	public static ObjectMapper DEFAULT_MAPPER;
-	public static ObjectMapper WRAPPED_MAPPER;
+	private static ObjectMapper DEFAULT_MAPPER;
+	private static ObjectMapper WRAPPED_MAPPER;
 	
     private static MsoLogger LOGGER = MsoLogger.getMsoLogger (MsoLogger.Catalog.RA, HttpClientConnector.class);