Don't use properties

They're quite inconvenient for this use-case.

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Add another config test

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Port from nosetests to py.test

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Add test for skipping host key verification

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Fix test

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>