Update Bom to align with latest Boot snapshot

This commit makes the following changes to the bom:

 - Remove dependency management for dependencies that are now
   covered by Boot
 - Remove version properties that are now declared by Boot

Tests have also been added so that the build will fail in the
event of dependency management or version properties being declared
in both the Platform bom and Boot's dependencies pom.

Closes #47
Merge branch '1.1.x'