use redis netdash key instead of junosspace

inventory_provider/routes/testing.py

@@ -54,12 +54,9 @@ def update_interface_statuses():
 def juniper_addresses():
     # TODO: this route (and corant, infinera routes) can be removed
     r = common.get_current_redis()
-    routers = []
-    for k in r.keys('junosspace:*'):
-        info = r.get(k.decode('utf-8'))
-        assert info  # sanity: value shouldn't be empty
-        info = json.loads(info.decode('utf-8'))
-        routers.append(info['address'])
+    routers = r.get('netdash')
+    assert routers  # sanity: value shouldn't be empty
+    routers = json.loads(routers.decode('utf-8'))
     return jsonify(routers)