Add support for all the authentication options.
Merge pull request #63 from coderanger/master

Add support for all the authentication options.
use underscores for tls options, tls_
tls config option default value white space
minor version bump, tls support
Make tty and interactive configurable as driver options
Allow %{instance_name} substitution in bound volumes

This allows you to do clever things, like redirect a directory inside
the container to an outside logs directory named after the instance.
Work around tmpfs-mounted /run

Create /var/run/sshd AND run sshd in the same command line, rather than
creating it in the docker build phase.
Ignore failure to stop container (testing change)