Merge branch 'zj-feature-flag-default-on-catfile-cache' into 'master'
Feature flag default on catfile cache
Closes gitaly#1712
See merge request gitlab-org/gitlab-ce!29556
(cherry picked from commit 14d46afd)
968674e4 Move Gitaly feature flag logic to Feature::Gitaly
4dfaaf40 Turn on Cat-File cache by default