`@Valid` annotation WARNs on container types

[ricardozanini]

What happened:
Every build now we can see in the logs:

[WARNING] [org.hibernate.validator.internal.metadata.aggregated.CascadingMetaDataBuilder] HV000271: Using `@Valid` on a container (java.util.Map) is deprecated. You should apply the annotation on the type argument(s). Affected element: additionalProperties
[WARNING] [org.hibernate.validator.internal.metadata.aggregated.CascadingMetaDataBuilder] HV000271: Using `@Valid` on a container (java.util.List) is deprecated. You should apply the annotation on the type argument(s). Affected element: _do
[WARNING] [org.hibernate.validator.internal.metadata.aggregated.CascadingMetaDataBuilder] HV000271: Using `@Valid` on a container (java.util.List) is deprecated. You should apply the annotation on the type argument(s). Affected element: _try

I believe this is a side effect of using Hibernate Validator on our types.

What you expected to happen:
For the build to work without annoying warnings.

How to reproduce it:

Anything else we need to know?:

Environment:

• Specification version used: