* stable-3.1:
ElasticContainer: Upgrade V7_5 to elasticsearch 7.5.1
ElasticContainer: Upgrade V6_8 to elasticsearch 6.8.6
Documentation: Update elasticsearch tests on macOS
Add a right margin to the search bar
Upgrade JGit to v5.6.0.201912101111-r
polygerrit: Fix 'Unexpected trailing comma' lint errors
Change-Id: I10d1f9f58f8d27bb23e960f36f49f899cb879a1b