Fix cros_mark_as_stable to work with gerrit
Fix cros_mark_as_stable to work with gerrit

Change-Id: I2076c79cafb5c1c5410e78588b60b323b8407ae1

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