fix(package): removes parameter value validation

We had removed parameter value validation in the backend. However, the
SDK still checked for empty value. This prohibits users to set empty
values in environment variables. This commit, removes the validation.

https://www.wrike.com/open.htm?id=1374797669

rapyuta_io/clients/package.py

@@ -613,10 +613,10 @@ def add_parameter(self, component_name, key, value):
             raise InvalidParameterException("component_name must be a non-empty string")
         if not key or not isinstance(key, six.string_types):
             raise InvalidParameterException("key must be a non-empty string")
-        if not value or not isinstance(value, six.string_types):
-            raise InvalidParameterException("value must be a non-empty string")
+
         component_id = self.plan.get_component_id(component_name)
         self.parameters[component_id][key] = value
+
         return self
 
     def set_component_alias(self, component_name, alias="", set_ros_namespace=False):

tests/package_test.py

@@ -418,18 +418,6 @@ def test_package_provision_api_error(self, mock_request):
             pkg.provision('test_package_name', provision_config)
         self.assertEqual(mock_request.call_count, 2)
 
-    @patch('requests.request')
-    def test_package_provision_component_parameter_invalid_value_failure(self, mock_request):
-        get_package = Mock()
-        get_package.text = PACKAGE_OK_NO_VALIDATE
-        get_package.status_code = requests.codes.OK
-        mock_request.side_effect = [get_package]
-        client = get_client()
-        pkg = client.get_package('my_package')
-        provision_config = pkg.get_provision_configuration('test-plan')
-        with self.assertRaises(InvalidParameterException):
-            provision_config.add_parameter('ros-talker', 'invalid-value', 123)
-
     @patch('requests.request')
     def test_package_provision_component_parameter_empty_component_name_failure(self, mock_request):
         get_package = Mock()