Use kubernetes client in integration tests

Clean up running containers for none driver

Move e2e binary compilation to makefile

If containers are running from a previous run of the none driver, the
subsequent test runs will fail.

Upgrade one vendor dependencie containing a bug (github.com/spf13/viper)

Fix status issue with none driver where additional text is being prin…

Update minikube-iso to v0.23.2

Remove tests that called exit code

Remove 30 second wait from start stop

I removed this awhile ago, but I'm not sure how it snuck back in.
The original issue was that the VM was getting a new IP, but the driver
was parsing the leases file and still picking the old IP.  So the only
way to fix it was to wait for the old lease to expire.

Fix mount syntax for insecure serving w/ none driver

Expand Linux CI scenario

Remove initial docker unit

Exit with non-zero code on error

The previous vendored `github.com/spf13/viper` had this bug https://github.com/spf13/viper/pull/296 .

This commit upgrades to the latest `github.com/spf13/viper` and closes #1797.

k8s 1.7.4

Delete profile config on machine delete

Also, don't print out anything when a profile doesn't exist.

The current implementation assumes that we already have docker running.
 This switches it to not remove any previous docker configuration
(since there isn't any), and uses our native file transfer utils
instead of the printf commands.

We don't log it, since RootCmd.Execute() will already print it out.

Fix grammatical error

The docker daemon initially starts up in the ISO, only to be stopped
and replaced by minikube's custom configuration.  This removes the
initial unit, so that docker doesn't automatically start up until
minikube restarts it with its configuration.

Add kernel module for MacVTap

Revert "Add netgo to localkube build"

This reverts commit dc8abed5.