This rounds out initial (alpha) support for a salt-ssh test runner.
At present, one must manually specify the --ssh flag to ensure that
the ssh deamons are spun up properly.
Conflicts:
tests/integration/__init__.py
tests/integration/files/conf/_ssh/sshd_config
tests/integration/files/conf/sshd_config
tests/integration/files/ext-conf/sshd_config