Merge branch 'stable-2.13'

* stable-2.13:
  Introduce FS backend expirationSeconds configuration parameter
  Introduce LFS operation authorization token for FS backend
  Fix typo in S3 backend expirationSeconds parameter configuration

Change-Id: I93c679a6a3beecd14fc07f0116b600f5460a24a6
tree: 2f7b0fee2e5321c6569e7216490b7e7a76d3633a
  1. lib/
  2. src/
  3. .buckconfig
  4. .gitignore
  5. BUCK