(Broken out from bug 789652 comment 19 onwards)

Changes buildernames of the form: b2g ics_armv7a_gecko emulator cedar opt test marionette-webapi to b2g_ics_armv7a_gecko_emulator cedar opt test marionette-webapi Making them closer to those like: b2g_cedar_ics_armv7a_gecko build b2g_cedar_ics_armv7a_gecko-debug build The regex used in TBPL works for both, so TBPL won't need updating beforehand.

(I moved the separator from builder_prefix to the base_name line, to improve consistency with https://hg.mozilla.org/build/buildbot-configs/file/c9735d3b6571/mozilla/b2g_config.py#l47)

Thank you :-) https://hg.mozilla.org/build/buildbot-configs/rev/ad33b01a07fa

In production.