Enable bot_update on blink trybots for a select 10 linux slaves
Enable bot_update on blink trybots for a select 10 linux slaves

BUG=361346,373456
TBR=agable

Review URL: https://codereview.chromium.org/301853002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@273583 0039d316-1c4b-4281-b951-d872f2087c98

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