Prepare for release v1.22.0
git log --pretty=format:"%an - %h - %s" v1.21.0-rc1..HEAD
Bo Yang - 3893bfa - Update for v1.22.0
Kiran RG - 242986b - Outputhost: add support for delay and skip-older (#234)
Bo Yang - ec8103f - Add auth check for DeleteConsumerGroup; Add permissions for owner (#232)
Guillaume Bailey - f74f60c - Allow move of consumed state extents, as these are also sealed (#231)
Kiran RG - c24a80b - add travis job for Go 1.8 (#229)
Kiran RG - 2caa749 - Delay-queue: changes to thrift, metadata, cli, etc (#228)
Wei Han - db794df - fix ringpop bootstrap code to allow empty entry (#223)
Bo Yang - 5ce1584 - Add secure methods for Update/Delete tool operations (#227)
Wei Han - 501b923 - fix sirupsen (#226)
Wei Han - 7673e97 - Cli bug fix: strip the password in destination path (#224)
Bo Yang - f69bc09 - Add AddPermission to AuthManager (#221)
Wei Han - 7b84ef5 - Bug fix: update is_multi_zone field in metadata for update destination request (#222)
Bo Yang - 41c2717 - Add auth check for DeleteDestination (#220)
Bo Yang - b7cadd7 - Check both ReadDesitnation and CreateConsumerGroup permissions when creating consumer group (#219)
Wei Han - d67f58e - support updating zone configs for multi-zone dest and cg (#218)
Kiran RG - 26d5f39 - Fix path-regex to allow for number only strings (#216)
Kiran RG - 02e354a - Revert "Add generous processing timeout for Sarama clients (#210)" (#217)