Add GOMA_GLOBAL_FILEID_CACHE_PATTERNS.
Add GOMA_GLOBAL_FILEID_CACHE_PATTERNS.

This is a new feature introduced in goma version 56.
We're expecting that this feature improves compile performance in buildbot.

We'd like to check this in some fyi builders first.

R=maruel@chromium.org

Review URL: https://codereview.chromium.org/206623009

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@260074 0039d316-1c4b-4281-b951-d872f2087c98

eunchong/build,eunchong/build,eunchong/build,eunchong/build