Merge pull request #2494 from 130s/master

(groovy/source.yaml) Add rtmros_nextage
add empty gbp repo for testing
update test entry
remove test entry
rosjava_build_tools: 0.1.27-0 in 'hydro/release.yaml' [bloom]
rosjava_bootstrap: 0.1.9-0 in 'hydro/release.yaml' [bloom]
Merge pull request #2495 from stonier/bloom-rosjava_build_tools-12

rosjava_build_tools: 0.1.27-0 in 'hydro/release.yaml' [bloom]
rosjava_messages: 0.1.35-0 in 'hydro/release.yaml' [bloom]
Merge pull request #2496 from stonier/bloom-rosjava_bootstrap-7

rosjava_bootstrap: 0.1.9-0 in 'hydro/release.yaml' [bloom]
rosjava_core: 0.1.5-0 in 'hydro/release.yaml' [bloom]
rosjava_extras: 0.1.4-0 in 'hydro/release.yaml' [bloom]
zeroconf_jmdns_suite: 0.1.12-0 in 'hydro/release.yaml' [bloom]
Merge pull request #2499 from stonier/bloom-rosjava_extras-4

rosjava_extras: 0.1.4-0 in 'hydro/release.yaml' [bloom]
Merge pull request #2500 from stonier/bloom-zeroconf_jmdns_suite-3

zeroconf_jmdns_suite: 0.1.12-0 in 'hydro/release.yaml' [bloom]
Update rosjava build tools
Undo the build version rewind for rosjava_bootstrap
Reverting rocon_msgs

The guys upgraded rocon_msgs without being aware of a few things resulting in the stable branch going through and breaking things.

Attempting to revert here - should changing the version number just 'work'?
Merge pull request #2498 from stonier/bloom-rosjava_core-4

rosjava_core: 0.1.5-0 in 'hydro/release.yaml' [bloom]
Merge pull request #2497 from stonier/bloom-rosjava_messages-7

rosjava_messages: 0.1.35-0 in 'hydro/release.yaml' [bloom]
Merge pull request #2501 from stonier/patch-51

Reverting rocon_msgs