sonar critical for error handling

Either log or rethrow this exception
Sonar Link:
https://sonar.onap.org/component_issues?id=org.onap.dmaap.messagerouter.msgrtr%3Amsgrtr#resolved=false|assignees=dthakur
Location:
src/main/java/com/att/nsa/cambria/backends/kafka/KafkaConsumerCache.java
Line No-290

Change-Id: Ib4dfae7659d7f31a02ba4a8c85a0407b1e165743
Issue-ID: DMAAP-280
Signed-off-by: Dushyant Singh Thakur <dt00503496@techmahindra.com>
diff --git a/src/main/java/com/att/nsa/cambria/backends/kafka/KafkaConsumerCache.java b/src/main/java/com/att/nsa/cambria/backends/kafka/KafkaConsumerCache.java
index 5f38443..7b6e048 100644
--- a/src/main/java/com/att/nsa/cambria/backends/kafka/KafkaConsumerCache.java
+++ b/src/main/java/com/att/nsa/cambria/backends/kafka/KafkaConsumerCache.java
@@ -288,7 +288,7 @@
 				curatorConsumerCache.close();
 				log.info("Curator client closed");
 			} catch (ZkInterruptedException e) {
-				log.warn("Curator client close interrupted: " + e.getMessage());
+				log.error("Curator client close interrupted: " + e);
 			} catch (IOException e) {
 				log.warn("Error while closing curator PathChildrenCache for KafkaConsumerCache" + e.getMessage());
 			}