The Go coverage tool does not currently support recording a coverage
data profile across packages, so we must manually combine these coverage
profiles and use it to produce an HTML report when KUBE_COVER is
nonempty. The exact value of KUBE_COVER is now ignored; KUBE_COVERMODE
can be used to set the coverage mode from the default of "atomic".
Additionally, if KUBE_GOVERALLS_BIN is set, hack/test-go.sh will attempt
to report coverage results to Coveralls.io. This is intended to be used
with the Travis build.
* Rewrite a bunch of the hack/ directory with modular reusable bash libraries.
* Have 'build/*' build on 'hack/*'. The stuff in build now just runs hack/* in a docker container.
* Use a docker data container to enable faster incremental builds.
* Standardize output to _output/{local,dockerized}/bin/OS/ARCH/*. This regularized placement makes cross compilation work.
* Move travis specific scripts under hack/travis
With new dockerized incremental builds, I can do a no-op `make quick-release` in ~30s. This is a significant improvement.
