Add police n hospital (#107)

* add back police and hospital goal

* update police db:add postcode; update hospital db:add address and postcode; update dbquery: query hospital with department, deepcopy query result

* update user templatenlg

convlab2/nlg/template/multiwoz/manual_user_template_nlg.json

@@ -5,7 +5,7 @@
             "Hi , I am planning a trip and need some help with a particular attraction .",
             "Yeah , I ' m looking for an entertaining tourist attraction , can point me in the direction of some places to check out ?",
             "Something fun . It needs to be an attraction . Can you make a suggestion ?",
-            "I ca n't wait to get there and see some of the local attractions . I am looking for a place to stay . Can you help me ?",
+            "I ca n't wait to get there and see some of the local attractions . Can you help me ?",
             "I am looking for tourist attractions .",
             "I am looking for a particular attraction .",
             "Can you help me plan a trip to see a particular attraction ?",