Nginx >=v1.12.0 annotation validation breaks some usecases

[IvanJosipovic]

Example:

• nginx.ingress.kubernetes.io/auth-url: http://oidc-guard:8080/auth?inject-json-claim=role%2Cjson_claim%2C%24.firebase.sign_in_attributes.role
• nginx.ingress.kubernetes.io/auth-url: http://oidc-guard:8080/auth?skip-auth=https:\/\/app\.dom\.loc\/api\/v3\/

Error:

admission webhook "validate.nginx.ingress.kubernetes.io" denied the request: annotation nginx.ingress.kubernetes.io/auth-url contains invalid value

Workarounds:

• Set controller.enableAnnotationValidations = false in Helm Chart