Upgrade nginx ingress controller to 0.21 to support TLSv1.3
Seems no breaking change in 0.21
- NGINX 1.15.6 with fixes for vulnerabilities in HTTP/2 (CVE-2018-16843, CVE-2018-16844)
- Support for TLSv1.3. Disabled by default. Use ssl-protocols ssl-protocols: TLSv1.3 TLSv1.2
- New annotation for canary deployments
- Support for configuration snippets when the authentication annotation is used
- Support for custom ModSecurity configuration
- LUA upstream configuration for TCP and UDP services .