Canaries to upload prebuilts
Canaries to upload prebuilts

After testing this change on the Mario canary alone, we modify the
default configuration for all the canaries to upload prebuilt binary
packages.

BUG=chromium-os:19035
TEST=Check the waterfall output for a new Prebuilts in which binary prebuilt
packages are uploaded to gs://chromeos-dev-installer/.

Change-Id: I27962f900dafbe6c74490e4736d231fd03dd813d
Reviewed-on: http://gerrit.chromium.org/gerrit/5912
Reviewed-by: Arkaitz Ruiz Alvarez <aaa218c86a3ed0b1322e99f3aaaf80ad2fb3236a@chromium.org>
Tested-by: Arkaitz Ruiz Alvarez <aaa218c86a3ed0b1322e99f3aaaf80ad2fb3236a@chromium.org>

coreos/chromite,coreos/chromite,chadversary/chromiumos.chromite,chadversary/chromiumos.chromite,zhang0137/chromite,bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,zhang0137/chromite,coreos/chromite,bpsinc-native/src_third_party_chromite,zhang0137/chromite