Merge "Revert "releasetools: Allow using futility-host to sign old TF.zip."" into nyc-dev am: b0df1ef7ac am: 983c979c25 am: bd6d03ab18 am: 8e574cb9f7
am: f2f1048e11

Change-Id: I813f3140f103315237ca4e40992f66f2105314bc