Minor fix on floating IP and SNAT feature at kubevirt networking

Change-Id: If45de2d83cf9c43105ad776767bb19c89636e5fa
diff --git a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/util/KubevirtNodeUtil.java b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/util/KubevirtNodeUtil.java
index f11547f..a4b0abb 100644
--- a/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/util/KubevirtNodeUtil.java
+++ b/apps/kubevirt-node/app/src/main/java/org/onosproject/kubevirtnode/util/KubevirtNodeUtil.java
@@ -16,7 +16,6 @@
 package org.onosproject.kubevirtnode.util;
 
 import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.base.Strings;
@@ -372,12 +371,8 @@
                 nodeType = GATEWAY;
                 gatewayBridgeName = jsonNode.get(GATEWAY_BRIDGE_NAME).asText();
             }
-        } catch (JSONException e) {
-            log.error("Failed to parse physnet config or gateway config object because of{}", e);
-        } catch (JsonMappingException e) {
-            log.error("Failed to parse physnet config or gateway config object because of{}", e);
-        } catch (JsonProcessingException e) {
-            log.error("Failed to parse physnet config or gateway config object because of{}", e);
+        } catch (JSONException | JsonProcessingException e) {
+            log.error("Failed to parse physnet config or gateway config object", e);
         }
 
         return DefaultKubevirtNode.builder()