Change StrictRedis usage to Redis

The StrictRedis class is only an alias for
Redis in >= 3.0.0

Change-Id: I5136852af5d0b4dc3542948a4114e06f0e4a0060

releasenotes/notes/remove-strict-redis-e50cccbdf4a86f76.yaml

@@ -0,0 +1,4 @@
+---
+upgrade:
+  - |
+    The minimum redis-py version required is now >= 3.0.0

zaqar/storage/redis/driver.py

@@ -318,14 +318,14 @@ def _get_redis_client(driver):
         return sentinel.master_for(connection_uri.master)
 
     elif connection_uri.strategy == STRATEGY_TCP:
-        return redis.StrictRedis(
+        return redis.Redis(
             host=connection_uri.hostname,
             port=connection_uri.port,
             db=connection_uri.dbid,
             password=connection_uri.password,
             socket_timeout=connection_uri.socket_timeout)
     else:
-        return redis.StrictRedis(
+        return redis.Redis(
             unix_socket_path=connection_uri.unix_socket_path,
             db=connection_uri.dbid,
             password=connection_uri.password,

zaqar/tests/unit/storage/test_impl_redis.py

@@ -179,13 +179,13 @@ class RedisDriverTest(testing.TestBase):
                                          driver.ControlDriver
                                          (self.conf, cache))
 
-        self.assertIsInstance(redis_driver.connection, redis.StrictRedis)
+        self.assertIsInstance(redis_driver.connection, redis.Redis)
 
     def test_version_match(self):
         oslo_cache.register_config(self.conf)
         cache = oslo_cache.get_cache(self.conf)
 
-        with mock.patch('redis.StrictRedis.info') as info:
+        with mock.patch('redis.Redis.info') as info:
             info.return_value = {'redis_version': '2.4.6'}
             self.assertRaises(RuntimeError, driver.DataDriver,
                               self.conf, cache,