Adapt automerger to expect minimal event payload

Gerrit will start sending events with minimal payload only on
googlesource.com. This commit makes it so that automerger will only use
identifiers from events and load the rest of the data on demand.

Change-Id: I196fa098c9d1216a908b943c45e99068a2961010
2 files changed
tree: 91dae2d8f729f666f94ac8934a9dcb422e4fb84c
  1. .gitignore
  2. BUILD
  3. LICENSE
  4. LICENSE-re2j
  5. external_plugin_deps.bzl
  6. src/