Change openjdk baseOS img to integration-java11

Since 7.2.0 integration images switched over to alpine, adjusted
Dockerfile to accomodate the switch.

Benefits from switching over:
* minimal {java11,python} images maintained by integration team
* using currently "blessed by seccom" versions (:latest tag used)
* should limit spread of legal issues across layers
* integration images will be the first to have automated compliance
  documentation
* should limit spread of base layers (contributing to deployment
  footprint - more base layers = more to download, more to store etc...)

Issue-ID: INT-1864
Issue-ID: DCAEGEN2-2420
Signed-off-by: Alexander Mazuruk <a.mazuruk@samsung.com>
Change-Id: I6c3fc2aae136a7f361a7e15cb52b75931392f34a
diff --git a/prh-app-server/pom.xml b/prh-app-server/pom.xml
index 2589c86..9173ed3 100644
--- a/prh-app-server/pom.xml
+++ b/prh-app-server/pom.xml
@@ -4,6 +4,7 @@
   ~ PNF-REGISTRATION-HANDLER
   ~ ================================================================================
   ~ Copyright (C) 2018-2021 NOKIA Intellectual Property. All rights reserved.
+  ~ Copyright (C) 2021 Samsung Electronics. All rights reserved.
   ~ ================================================================================
   ~ Licensed under the Apache License, Version 2.0 (the "License");
   ~ you may not use this file except in compliance with the License.
@@ -26,7 +27,7 @@
   <parent>
     <groupId>org.onap.dcaegen2.services</groupId>
     <artifactId>prh</artifactId>
-    <version>1.5.6-SNAPSHOT</version>
+    <version>1.6.0-SNAPSHOT</version>
   </parent>
 
   <groupId>org.onap.dcaegen2.services.prh</groupId>