Changes

Move the Session API into the Northbound project

User Sessions are really part of the northbound access mechanism, and should not be part of the core. This will simplify adding access restrictions in the future.

Signed-off-by: Tim Ward <timothyjward@apache.org>
 (commit: aa0c559)

Make the sensiNact build more CI friendly

Since Maven 3.5.0 poms have had the ability to be [CI-friendly](https://maven.apache.org/maven-ci-friendly.html) allowing a more flexible approach to releasing without the need to edit POM files. This also impacts the creation of our feature files, which can now flexibly alter the versions of the bundles they deploy to match what's being built in by CI. The end result should be a much simpler time when we want to tag or release any particular commit.

Signed-off-by: Tim Ward <timothyjward@apache.org>
 (commit: 75ebfda)