api_mapping_template: Add support for localIP
api_mapping_template: Add support for localIP

Signed-off-by: Andrei Gherzan <8dc7c09356db0b1762fb140617d7375c0a5a4131@resin.io>

awslabs/route53-dynamic-dns-with-lambda,awslabs/route53-dynamic-dns-with-lambda