'Adds metadata tags to an Amazon RDS resource. These tags can
also be used with cost allocation reporting to track cost
associated with Amazon RDS resources, or used in Condition
statement in IAM policy for Amazon RDS.
For an overview on tagging Amazon RDS resources, see `Tagging
Amazon RDS Resources`_.
:type resource_name: string
:param resource_name: The Amazon RDS resource the tags will be added
to. This value is an Amazon Resource Name (ARN). For information
about creating an ARN, see ` Constructing an RDS Amazon Resource
Name (ARN)`_.
:type tags: list
:param tags: The tags to be assigned to the Amazon RDS resource.
Tags must be passed as tuples in the form
[(\'key1\', \'valueForKey1\'), (\'key2\', \'valueForKey2\')]'

def add_tags_to_resource(self, resource_name, tags):

    params = {'ResourceName': resource_name}
    self.build_complex_list_params(params, tags, 'Tags.member', ('Key', 'Value'))
    return self._make_request(action='AddTagsToResource', verb='POST', path='/', params=params)
