Pick commit removing deprecated docker flag to last three stable branches.
Latest version of docker removed '--force' option for docker tag
. This was causing builds to fail as the build machines had latest version of docker. !1235 (merged) fixed it. We need to pick this to last three stable branches - 8-15-stable, 8-14-stable, 8-13-stable (and their EE counterparts).
(It is already picked to upcoming 8-16-stable branch, I believe)