Fixing since tags.

Some of them were backported.
Some of them originates from security 2.8, when
the project was on it's own repository. Using
already used designation for those, prepending
project name to version to avoid clash.

Note: Security was at version 2.8 when it got
squashed into Nexus OSS repository. Today,
Nexus is at version 2.8, but we had leftovers
of some security components having no designation
and hence, leading to confusion.
Revert "update @since to 2.7.2"

This reverts commit b86b5fdb55268b8347effb9b3287f53ac3bdbf33.
Merge remote-tracking branch 'origin/nexus-2.7.x' into nexus-2.7.x-nx-client-changes