Merge remote-tracking branch 'cos/cos-sdk'

BUG=b/347026719
TEST=presubmit
RELEASE_NOTE=None

Change-Id: Id3270498ab84c5d9c6d012f40746e48789b01392
Reviewed-on: https://cos-review.googlesource.com/c/cos/manifest/+/77181
Tested-by: He Gao <hegao@google.com>
Reviewed-by: Robert Kolchmeyer <rkolchmeyer@google.com>
tree: f28c2b2da0193bad87f9485e000404e51dc93c0b
  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.