Merge branch 'release-0.60.0' into develop

* release-0.60.0:
  Bumping version to 0.60.0
  Updated models to the latest version.
Update elb model to the latest version
Bumping version to 0.61.0
Merge branch 'release-0.61.0'

* release-0.61.0:
  Bumping version to 0.61.0
  Update elb model to the latest version