ONAP-REST DAO Sonar/Checkstyle clean and knock-on

Clean up the ONAP-REST DAO package and also deal with knock-on chages in
other packages.

Issue-ID: POLICY-2131
Change-Id: I381d514d37ffbddb7a91b8f8a018c7354fc437b3
Signed-off-by: liamfallon <liam.fallon@est.tech>
17 files changed