Update traefik dependencies (docker/docker and related)
- Update dependencies
- Fix compilation problems
- Remove vdemeester/docker-events (in docker api now)
- Remove `integration/vendor`
- Use `testImport`
- update some deps.
- regenerate the lock from scratch (after a `glide cc`)
- fixed dependencies order and renamed Makefile target
- extracted docker run params into DOCKER_RUN_OPTS
- crossbinary-default contains 64bit Linux, Win and Darwin
- crossbinary-others contains 32bit Linux, Win, Darwin and 32/64bit *bsd
- added dependencies to crossbinary-default and crossbinary-others targets