chore: clean up of deprecated flags (#4545)

Also fix sentinel test by using a precise redis-server version.
Finally, add pytest warnings filter to reduce noise

Signed-off-by: Roman Gershman <roman@dragonflydb.io>

tests/dragonfly/instance.py

@@ -480,8 +480,10 @@ class RedisServer:
         self.port = port
         self.proc = None
 
-    def start(self, **kwargs):
-        servers = ["redis-server-6.2.11", "redis-server-7.2.2", "valkey-server-8.0.1"]
+    def start(self, redis7=None, **kwargs):
+        servers = ["redis-server-7.2.2"]
+        if not redis7:
+            servers += ["redis-server-6.2.11", "valkey-server-8.0.1"]
         command = [
             random.choice(servers),
             f"--port {self.port}",

tests/dragonfly/sentinel_test.py

@@ -81,7 +81,7 @@ class Sentinel:
         logging.info(self.config_file.read_text())
 
         self.proc = subprocess.Popen(
-            ["redis-server", f"{self.config_file.absolute()}", "--sentinel"]
+            ["redis-server-6.2.11", f"{self.config_file.absolute()}", "--sentinel"]
         )
 
     def stop(self):

tests/dragonfly/snapshot_test.py

@@ -154,8 +154,7 @@ async def test_dbfilenames(
     {
         **BASIC_ARGS,
         "proactor_threads": 4,
-        "dbfilename": "test-redis-load-rdb",
-        "list_rdb_encode_v2": "false",  # Needed for compatibility with Redis 6
+        "dbfilename": "test-redis-load-rdb",        
     }
 )
 async def test_redis_load_snapshot(
@@ -176,7 +175,7 @@ async def test_redis_load_snapshot(
     await async_client.connection_pool.disconnect()
     df_server.stop()
 
-    redis_local_server.start(dir=tmp_dir, dbfilename="test-redis-load-rdb.rdb")
+    redis_local_server.start(dir=tmp_dir, redis7=True, dbfilename="test-redis-load-rdb.rdb")
     await asyncio.sleep(1)
     c_master = aioredis.Redis(port=redis_local_server.port)
     await c_master.ping()

tests/pytest.ini

@@ -10,3 +10,5 @@ markers =
   slow: marks tests as slow (deselect with '-m "not slow"')
   opt_only: marks tests that are only reasonable to run against an opt-built Dragonfly
   exclude_epoll: marks tests that should not run on epoll socket
+filterwarnings =
+    ignore::DeprecationWarning