Recover "awsregion" parameter for registry-creds addon

sshd_config and motd

Overwrite the default configuration and enable

PrintMotd
PermitTunnel yes
MaxSessions 1000

So that we can run multiplex more ssh connections and do things in
parallel.

It seems the "awsregion" parameter was removed in 8ba6f478 (#1711) unexpectedly.
It caused making incorrect awsecr-cred with unexpected aws region.

Add CommandRunner interface

kubernetes cluster componenets -> components

WIP: Initial hyperkit driver implementation.

updated driver documentation to include none driver

Rename e2e-windows-amd64 to e2e-windows-amd64.exe

Two implementations, SSHRunner and ExecRunner allow commands to be run
either through SSH or os.Exec respectively.  This allows the cluster
bootstrappers to be unaware of how they are actually executing the
commands they need.  Copy and Remove functions provide a nice
convenience function for running commands that copy and remove files
respectively.

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.