Ignore patch level on OpenBSD packages

[epsilon-0]

Projects affected
OpenBSD packages in general, with a concrete example of schema2ldif - https://repology.org/project/schema2ldif/versions

OpenBSD packages sometimes have a patch level present in their package version, such as 1.3pl20210902 above, which shows up as problematic in repology. This plXXX should be ignored and treated as just the version by itself.

Observed behavior
plXXX is counted in the patch version and leads to the package marked as problematic.

Expected behavior
Ignore plXXX and unmark the problematic setting.

[AMDmi3]

pl is used in openbsd for upstream versions containing patch parts, such as openssh, ntp, lumina, and python:shapely, so we cannot remove it.

[epsilon-0]

Oh, OK! Thanks for clarifying.

[AMDmi3]

I should probably add that

• As said, it (mixing up the way of conveying upstream version components and local snapshots) is a problem of openbsd repository
• We're handling it (IMO) the most graceful way possible - ignoring *pl*, which leads to
  • Snapshots getting ignored status - the least penalizing among the ignored statuses family, and the same as we're using for snapshots in any other repo
  • Upstream p{,atch,post} versions getting ignored (again, the least penalizing) status when coming solely from openbsd, but getting expected status when there's matching p* version from any other repo
• See [discussion] unified scheme for snapshot versions repology-updater#345 for ideas/discussion on how to handle snapshot versions