Address drools-pdp sonar issues

Addressed more sonar issues in drools-pdp:
- unwrap multiple instances of the same annotation (NamedQuery)
- use lambda instead of anonymous class
- duplicate code; addressed by using annotation instead of toString.
  This still leaves other duplicate code.

Issue-ID: POLICY-2203
Change-Id: I8c6ff6562820af638044f134eb8a6725a5f05e8e
Signed-off-by: Jim Hahn <jrh3@att.com>
5 files changed