Do not match .DS_Store files

[pombredanne]

Describe the bug
A clear and concise description of what the bug is.

.DS_Store files can be matched in a d2d pipeline. We should not match them, and eventually we should not index them in the purldb.

[abdollahShahid]

Hi @pombredanne,

I implemented a fix to ensure .DS_Store files are excluded from matching in the d2d pipeline.

Changes:

• Exclude .DS_Store resources from the queryset sent for PurlDB matching
• Use filename-based filtering to cover .DS_Store both at the root and within subdirectories

PR: #2016

Please let me know if you’d like any additional changes or improvements. Happy to iterate.

Thanks!