fix(test): reflect changes in InfluxDB 2.2 (#428)

Author: bednar

tests/test_WriteApi.py

@@ -342,7 +342,7 @@ def test_write_empty_data(self):
         bucket = self.create_test_bucket()
 
         from distutils.version import LooseVersion
-        version = self.client.version()
+        version = self.client.version().strip('v')
         if 'nightly' not in version and LooseVersion(version) <= LooseVersion("2.0.8"):
             with self.assertRaises(ApiException) as cm:
                 self.write_client.write(bucket.name, record="")