NONRTRIC - Implement DMaaP mediator producer service in Java

Added API documentation.
Added some unittest.
Improved some logging.
Simplified the registration task somewhat.

Signed-off-by: PatrikBuhr <patrik.buhr@est.tech>
Issue-ID: NONRTRIC-597
Change-Id: I2afa2fbf1073459cf560212f2d2e601446352a25
diff --git a/dmaap-adaptor-java/config/application.yaml b/dmaap-adaptor-java/config/application.yaml
index b327a0b..5733ea7 100644
--- a/dmaap-adaptor-java/config/application.yaml
+++ b/dmaap-adaptor-java/config/application.yaml
@@ -11,7 +11,8 @@
       exposure:
         # Enabling of springboot actuator features. See springboot documentation.
         include: "loggers,logfile,health,info,metrics,threaddump,heapdump"
-
+springdoc:
+  show-actuator: true 
 logging:
   # Configuration of logging
   level: