Print version of haproxyadmin library as well

It is quite useful to know the version of harpoxyadmin library that we
load, so let's print it when we print our version.

haproxytool/cli.py

@@ -24,15 +24,19 @@
 from operator import methodcaller
 from importlib import import_module
 from docopt import docopt
-from haproxytool import __version__ as version
+from haproxytool import __version__
 from haproxytool import OUR_CMDS
+from haproxyadmin import __version__ as hapadmin_version
 
 
 def main():
     """
     Parse top level CLI interface and invoke subcommand
     """
+    version = ("haproxytool version: {}, haproxyadmin library version: {}"
+               .format(__version__, hapadmin_version))
     args = docopt(__doc__, version=version, options_first=True)
+    print(args)
 
     call_main = methodcaller('main')