V8 Buildbot: Copy revision build property to tester slave.
V8 Buildbot: Copy revision build property to tester slave.

BUG=332773
TBR=jochen@chromium.org

Review URL: https://codereview.chromium.org/131873002

git-svn-id: 239fca9b83025a0b6f823aeeca02ba5be3d9fd76@243899 0039d316-1c4b-4281-b951-d872f2087c98

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