Cobbler release 2.8.3

Cobbler 2.8.2 released

Cobbler release 2.8.1

Cobbler 2.8.0 released

Cobbler 2.8.0 released

Merge pull request cobbler#1627 from jmaas/release26

Cobbler release 2.6.11

Release Cobbler 2.6.10

Merge pull request cobbler#1506 from jmaas/release26

Release 2.6.9.

Merge pull request cobbler#1504 from jmaas/release24

Release24

Merge pull request cobbler#1466 from jmaas/release26

Cobbler 2.6.8 release.