MavenMetadataContentValidator blocks proxying repositories with non standard directory names

[vjh0107]

Proxying PaperMC's repository (https://repo.papermc.io/repository/maven-public/) fails because the SNAPSHOT directory name (1.20.4-R0.1-SNAPSHOT) doesn't match the in maven-metadata.xml (1.20.4-SNAPSHOT). The validator at MavenMetadataContentValidator.validatePath() does a strict path.equals() check and throws InvalidContentException.

Here's the log:

WARN  MavenMetadataContentValidator - maven-metadata.xml path
  io/papermc/paper/paper-api/1.20.4-R0.1-SNAPSHOT/maven-metadata.xml
  does not match the expected path
  io/papermc/paper/paper-api/1.20.4-SNAPSHOT/maven-metadata.xml

I suggest that when Layout Policy is Permissive, skip this validation.

[mpiggott]

The permissive layout is really intended to allow non-maven files in the repository. In this case you have maven metadata that is broken.

I think if you need this you might need to consider using a raw repository and configuring maven/gradle with that repository as it isn't possible to include in a group.