Pass ignore_locks got gclient in bot_update
Pass ignore_locks got gclient in bot_update

https://codereview.chromium.org/349643004 turns on the --ignore_locks option.

BUG=261741,387650

Review URL: https://codereview.chromium.org/349293003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@279226 0039d316-1c4b-4281-b951-d872f2087c98

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