Merge pull request kubernetes-client#1619 from yliaog/automated-relea…

…se-of-20.12.0b1-upstream-release-20.0-1636397891

Automated release of 20.12.0b1 upstream release 20.0 1636397891

Merge pull request kubernetes-client#1609 from yliaog/automated-relea…

…se-of-20.11.0a1-upstream-release-20.0-1635352326

Automated release of 20.11.0a1 upstream release 20.0 1635352326

Merge pull request kubernetes-client#1584 from roycaihw/automated-rel…

…ease-of-19.15.0-upstream-release-19.0-1635134453

Generate v19.15.0 client

Merge pull request kubernetes-client#1569 from roycaihw/v19b1

Generate v19.15.0b1 client

Merge pull request kubernetes-client#1552 from roycaihw/v19a1

Generate v19.15.0a1 client

Merge pull request kubernetes-client#1527 from roycaihw/v18-ga

Release 18.20.0

Merge pull request kubernetes-client#1496 from roycaihw/release-18b1

Release v18.20.0b1

Merge pull request kubernetes-client#1464 from scottilee/release-17.0

Release 17.17.0

Merge pull request kubernetes-client#1449 from scottilee/release-17.0

Release v17.17.0.b1

Merge pull request kubernetes-client#1411 from roycaihw/release-18.0

Release v18.17.0a1