ConfigEntry: consolidate calculating the actual destination branch

Jiri and Repo updaters have the logic to handle the '*' in the
destination to calculate the actual destination branch to write.

Consolidate that in the ConfigEntry. This simplifies introducing the
support for ref patterns in later changes.

Change-Id: Iec6f72225e2e560335c0c30f23e39c86a2dde232
4 files changed
tree: ddd0be496dbde9521ad3901e6b6cbe8003a33b1f
  1. java/
  2. javatests/
  3. BUILD
  4. external_plugin_deps.bzl

The plugin will update a superproject to contain the submodules defined in the manifest XML file whenever the manifest repo is changed.

For more information see the documentation or the build instructions