chore(builder): update Docker to 1.3.3

Updates Docker inside deis-builder to version 1.3.3, which addresses
several vulnerabilities. Details are at
https://groups.google.com/d/msg/docker-user/nFAz-B-n4Bw/0wr3wvLsnUwJ
Merge pull request #2729 from mboersma/docker-133

chore(builder): update Docker to 1.3.3