added some testenv utilities

test/data/extract-cache-entries.py

+import json
+
+with open('router-info.json') as f:
+    db = json.loads(f.read())
+
+cache = dict([(k, db[k]) for k in db if k.startswith('classifier:')])
+
+with open('cached-entries.json', 'w') as f:
+    f.write(json.dumps(cache))

test/data/update-test-db.py

+import json
+import os
+import redis
+
+
+r = redis.StrictRedis(host="test-dashboard02.geant.org")
+
+d = {}
+for k in r.keys():
+    print(k)
+    d[k.decode('utf-8')] = r.get(k).decode('utf-8')
+
+data_filename = os.path.join(os.path.dirname(__file__), "router-info.json")
+
+with open(data_filename, "w") as f:
+    f.write(json.dumps(d))