Add missing python-openssl dependency to invirt-vnc-server.
drwxr-xr-x - debian
-rwxr-xr-x 1075 invirt-vnc-authtoken
-rwxr-xr-x 129 invirt-vnc-getcert
-rwxr-xr-x 330 invirt-vnc-server
drwxr-xr-x - python
-rwxr-xr-x 743 setup.py