Add hdctools to manifest

hdctools changed their default branch from master to main. git-2.eclass
assumes master to be the default branch, so lets download this repo
explicitly.

BUG=None
TEST=repo init, repo sync, cros_sdk --nouse-image
RELEASE_NOTE=None

Change-Id: Ia21b80101723c8acb61f915dd2921fc61c4b0c33
Reviewed-on: https://cos-review.googlesource.com/c/cos/manifest/+/11050
Tested-by: Robert Kolchmeyer <rkolchmeyer@google.com>
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
1 file changed
tree: bc4b4797830941be73a0e960c141df270e77d792
  1. external_full.xml
  2. flaky_repos.xml
  3. LICENSE
  4. PRESUBMIT.cfg
  5. README.md
README.md

Manifests used to checkout COS source

Usage: repo init -u https://cos.googlesource.com/cos/manifest.git && repo sync.