Change bot_update from 'retry' to 'attempt'
Change bot_update from 'retry' to 'attempt'

R=estaab@chromium.org, hinoka@chromium.org, tandrii@chromium.org

Review URL: https://codereview.chromium.org/1259473003

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@296103 0039d316-1c4b-4281-b951-d872f2087c98

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