Add JaCoCo coverage for OVSDB

- Update to JaCoCo 6.4
- Add UT and IT configurations
- Required to push UT/IT coverage to Sonar
- Can be run locally:
 mvn clean verify -Pintegrationtest
- Local coverage reports are in the target/site directory of each
  module

Change-Id: I5c4c1c4d2e7b37eb67f9bf2ade818c8ed4256cd0
Signed-off-by: Dave Tucker <djt@redhat.com>
Merge "Add JaCoCo coverage for OVSDB" into topic/schema