Use parent snapshot in drools-apps

Fixed checkstyle issues that were subsequently reported.
Also fixed a few eclipse warnings.
Also fixed some of the sonar issues in the files that were touched:
- use "{}" in logger calls
- camelcase method names
- use "<?>" instead of generics
- add serialization ID

Issue-ID: POLICY-2188
Change-Id: I5c94a2e26dd74a61a0a919e1c3da17ab02a5bc9d
Signed-off-by: Jim Hahn <jrh3@att.com>
diff --git a/pom.xml b/pom.xml
index c39c421..cffa29b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -25,7 +25,7 @@
     <parent>
         <groupId>org.onap.policy.parent</groupId>
         <artifactId>integration</artifactId>
-        <version>3.1.3</version>
+        <version>3.2.0-SNAPSHOT</version>
         <relativePath />
     </parent>