Deis Builder v2.8.0

v2.7.1 -> v2.8.0

Features

• b91c8a0 gitreceive: add app envvars to DOCKER_BUILD_ARGS
• 357f9a1 gitreceive: fix type of dockerBuildArgs

Refactors

• 3b7fcef pkg: placate new go metalinter warnings

Fixes

• b3b1d20 Dockerfile: force gunzip of license files
• e1e3452 gitreceive/build.go: watch pods in the appropriate namespace
• 7f121a4 .travis.yml: declare env vars on one line

Maintenance

• e7eafb9 Makefile: update docker-go-dev to v0.22.0
• f3e13b3 glide: bump golang.org/x/crypto to 453249f