Server roles switched to metaplugin
Bugzilla update
Refactor dockerbot setup script
Merge pull request #1414 from mfalesni/metaplug

Pluggable interface for meta + server_roles converted + bugzilla plugin
Merge pull request #1450 from jkrocil/gpg-keys-retry

Refactor dockerbot setup script
Added build to trackerbot
Merge pull request #1467 from psav/add_build

Added build to trackerbot