Initialize client library from config file and environmental properties (#52)

Author: rolincova

tests/test_WriteApi.py

@@ -470,7 +470,7 @@ def tearDown(self) -> None:
 
     def test_connection_option_from_conf_file(self):
         self.client.close()
-        self.client = InfluxDBClient.from_config_file("config.ini", self.debug)
+        self.client = InfluxDBClient.from_config_file(os.getcwd() + "/config.ini", self.debug)
 
         self._check_connection_settings()
 
@@ -490,7 +490,7 @@ def _check_connection_settings(self):
 
     def test_default_tags_from_conf_file(self):
         self.client.close()
-        self.client = InfluxDBClient.from_config_file("config.ini", self.debug)
+        self.client = InfluxDBClient.from_config_file(os.getcwd() + "/config.ini", self.debug)
 
         self._write_point()