pylint: allow unittest naming

unittest methods use CamelCase for its asserts. We use it here for our
custom assert too.

Part of #270

Author: DifferentialOrange

test/suites/test_encoding.py

@@ -8,6 +8,8 @@
 from .lib.tarantool_server import TarantoolServer
 
 class TestSuiteEncoding(unittest.TestCase):
+    # pylint: disable=invalid-name
+
     @classmethod
     def setUpClass(self):
         print(' ENCODING '.center(70, '='), file=sys.stderr)