Azure kubelogin (CLI)

Enhancements

• Support encrypted client certificates for service principal login by @sybereal in https://github.com/Azure/kubelogin/pull/126
• remove token cache for azurecli login by @weinong in https://github.com/Azure/kubelogin/pull/142
• supports client.authentication.k8s.io/v1 by @everjing in https://github.com/Azure/kubelogin/pull/140
• devicelogin should return error when interactivemode is never by @everjing in https://github.com/Azure/kubelogin/pull/145
• Add webbrowser login method by @everjing in https://github.com/Azure/kubelogin/pull/135

Full Changelog: https://github.com/Azure/kubelogin/compare/v0.0.20...v0.0.21