Disable bot_update on linux_chromeos_asan
Disable bot_update on linux_chromeos_asan

We need a TS restart to pick up the cros fix before this works, so lets just
disable bot_update on this builder for now.

BUG=361346
TBR=agable

Review URL: https://codereview.chromium.org/248193006

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@265464 0039d316-1c4b-4281-b951-d872f2087c98

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