SEC-2337: ACL documentation refers to non-existent samples

Nick Williams (Migrated from SEC-2337) said:

The reference documentation for access control lists says the following:

Refer to one of the samples that ship with Spring Security for an example configuration

and

refer to the ACL samples for the appropriate SQL statements

However, no ACL sample is listed in https://github.com/spring-projects/spring-security/tree/master/samples. Either no samples actually exist (in which case the documentation needs sample configurations or a sample should be created), or the sample ACL config is buried in some other sample (in which case the documentation should be updated to link to the specific sample or samples that should be referenced). A Spring Security user less knowledgable about the source code would have some difficulty deriving the correct configuration.

Start with the ACL reference documentation at the linked Spring Security 3.2.x page and inspect the repository's samples directory. Determine whether ACL configuration exists in another sample or is absent; done means the documentation points to a real sample or provides the needed configuration and SQL guidance.