Regression: Yum metadata leaks between trees in a hosted yum repository.

Set up a hosted yum repository in Nexus Repo 3.16.0 with "repodata depth" of "1".

Deploy rpm files to it under two separate directories, such as:

tools/noarch/my-webapp-1.0.0.rpm
tools/noarch/my-webapp-1.0.1.rpm
tools-dev/noarch/my-webapp-1.0.2.rpm
tools-dev/noarch/my-webapp-1.0.3.rpm

Now download the primary.xml.gz file from the "tools/repodata" directory.  You'll find that it contains all of the rpm files.

Expected: Only rpm files in the same tree as the "repodata" directory should be included in its metadata.

I also tested on 3.11.0, and this bug does not occur in that version.