Merge branch 'stable-2.15' into stable-2.16
* origin/stable-2.15:
LocalLargeFileRepository: Rename DEFAULT_TIMEOUT to DEFAULT_EXPIRATION_SECONDS
LocalLargeFileRepository#getContentPath: Avoid String concatentation
LfsBackend: Add implementation of toString
LfsGlobalConfig: Use native Java Stream API instead of guava
LfsBackend: Make constructor and DEFAULT private
Upgrade bazlets to latest stable-2.15
Use Logger's built-in formatting where appropriate
Align Eclipse compiler settings with core Gerrit's
Upgrade bazlets to latest stable-2.14
Update bazlets to fix build with bazel 0.23
Change-Id: I4866485a00012c8456c58c227703a7a9e5e61dcb
