Tweaking heartbeat timeout test to not fail with protocol v2

tests/integration/standard/test_connection.py

@@ -143,7 +143,7 @@ class HeartbeatTest(unittest.TestCase):
         for conn in holders:
             if host == str(getattr(conn, 'host', '')):
                 if isinstance(conn, HostConnectionPool):
-                    if conn._connections is not None:
+                    if conn._connections is not None and len(conn._connections) > 0:
                         connections.append(conn._connections)
                 else:
                     if conn._connection is not None:
@@ -162,7 +162,7 @@ class HeartbeatTest(unittest.TestCase):
 
     def wait_for_no_connections(self, host, cluster):
         retry = 0
-        while(retry < 200):
+        while(retry < 100):
             retry += 1
             connections = self.fetch_connections(host, cluster)
             if len(connections) is 0: