Upgrade springboot.version from 2.0.5 to 2.1.5.

Upgrade springboot.version from 2.0.5 to 2.1.5.
Fixed APIHandler junit test cases with expected DB error messages.

Issue-ID: SO-2157
Signed-off-by: Benjamin, Max (mb388a) <mb388a@att.com>
Change-Id: I77ce873018b88268b9221226b95c9c106f93a8d0
diff --git a/adapters/mso-sdnc-adapter/src/main/resources/application.yaml b/adapters/mso-sdnc-adapter/src/main/resources/application.yaml
index 9be0a25..2ef721f 100644
--- a/adapters/mso-sdnc-adapter/src/main/resources/application.yaml
+++ b/adapters/mso-sdnc-adapter/src/main/resources/application.yaml
@@ -11,6 +11,10 @@
     max-pool-size: 50
     queue-capacity: 500
 
+spring:
+  main:
+    allow-bean-definition-overriding: true
+
 #Actuator
 management:
   endpoints: