Exception handling to fix partition service unavailability issue

provider/notification-azure/src/main/java/org/opengroup/osdu/notification/provider/azure/messageBus/SubscriptionManagerImpl.java

@@ -134,6 +134,10 @@ public class SubscriptionManagerImpl implements ISubscriptionManager {
 
     @Override
     public void run() {
-        subscribeNotificationsEvent();
+        try {
+            subscribeNotificationsEvent();
+        } catch (Exception e) {
+            LOGGER.error("An exception occurred while subscription registration process : ", e);
+        }
     }
 }