update for traefik v2, treafik-proxy v1

- tls config is no longer allowed in static config file, add separate dynamic config
- no longer need to persist auth config ourselves (TraefikProxy handles this)
- make sure to reload proxy before reloading hub in tests

setup.py

@@ -14,11 +14,10 @@ setup(
         "ruamel.yaml==0.17.*",
         "jinja2",
         "pluggy==1.*",
-        "passlib",
         "backoff",
         "requests",
         "bcrypt",
-        "jupyterhub-traefik-proxy==0.3.*",
+        "jupyterhub-traefik-proxy==1.0.0b3",
     ],
     entry_points={
         "console_scripts": [