Add property to enable Notification Sevice async processing

- made notification service synchronous by default
- added new property to enable async processing if required

Issue-ID: CPS-630
Signed-off-by: Renu Kumari <renu.kumari@bell.ca>
Change-Id: I28c2c98d7a79219a5932732d2940f5ac37bf1653
diff --git a/cps-service/src/test/resources/application.yml b/cps-service/src/test/resources/application.yml
index b1546d7..436c3d4 100644
--- a/cps-service/src/test/resources/application.yml
+++ b/cps-service/src/test/resources/application.yml
@@ -22,10 +22,12 @@
       enabled-dataspaces: ".*-published,.*-important"
     enabled: true
     topic: cps-event
-  async-executor:
-    core-pool-size: 2
-    max-pool-size: 10
-    queue-capacity: 0
+  async:
+    enabled: true
+    executor:
+      core-pool-size: 2
+      max-pool-size: 10
+      queue-capacity: 0
 
 spring:
   kafka: