Upgrade Beacon API to v1.1.0
Currently, we are supporting v.1.0.1 (https://raw.githubusercontent.com/ga4gh-beacon/specification/master/beacon.yaml)
We would like to catch up with 1.1.0 (https://raw.githubusercontent.com/ga4gh-beacon/specification/423a2feafee4f78610a368756b0d4cbc9507332b/beacon.yaml).
Review the differences and update the API accordingly