Add ssl support for the probe

Hosts ending in :443 are treated as SSL. There is also a
--probe.insecure flag, for using it in development environments where
SSL cannot be verified.

docker/entrypoint.sh

@@ -91,7 +91,7 @@ while true; do
                 shift
             fi
             PROBE_ARGS="$PROBE_ARGS -token=$ARG_VALUE"
-            echo "scope.weave.works:80" >/etc/weave/apps
+            echo "scope.weave.works:443" >/etc/weave/apps
             touch /etc/service/app/down
             ;;
         --no-app)