Let CATS escape out the windows

We were running the CATS on windows and noticed some tests shelled out to bash to zip a file. Luckily we knew of an easy way to zip files in Go, so we fixed this up.

We also wanted to make it easier to run CATS against bosh-lite deploys, so we added some optional flags you can pass to `cf login` and `cf api`.

@jfoley / @tjarratt