temp changes

notification-core/src/main/java/org/opengroup/osdu/notification/pubsub/IPubsubHandshakeHandler.java

@@ -4,5 +4,5 @@ import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Component;
 
 public interface IPubsubHandshakeHandler {
-    ResponseEntity getHandshakeResponse();
+    String getHandshakeResponse();
 }

provider/notification-azure/src/main/java/org/opengroup/osdu/notification/provider/azure/pubsub/PubsubHandshakeHandler.java

@@ -10,7 +10,8 @@ import org.springframework.stereotype.Component;
 public class PubsubHandshakeHandler implements IPubsubHandshakeHandler {
 
     @Override
-    public ResponseEntity getHandshakeResponse() {
+    public String getHandshakeResponse() {
+
         return null;
     }
 }

provider/notification-gcp/src/main/java/org/opengroup/osdu/notification/provider/gcp/pubsub/PubsubHandshakeHandler.java

@@ -10,7 +10,7 @@ import org.springframework.stereotype.Component;
 public class PubsubHandshakeHandler implements IPubsubHandshakeHandler {
 
     @Override
-    public ResponseEntity getHandshakeResponse() {
+    public String getHandshakeResponse() {
         return null;
     }
 }