Merge pull request #1401 from pulp/patchback/backports/3.36/f35abcf8691b5d2d9eb7ebf6dd0049e1f8128ac4/pr-1400

[PR #1400/f35abcf8 backport][3.36] Optimize provenance content query for integrity api

Author: jobselko

CHANGES/+integrity-db-query.bugfix

@@ -0,0 +1 @@
+Fixed the Integrity API evaluating the entire repository's content query before filtering.

pulp_python/app/pypi/views.py

@@ -621,7 +621,7 @@ class ProvenanceView(PyPIMixin, ViewSet):
     def retrieve(self, request, path, package, version, filename):
         """Gets the provenance for a package."""
         repo_ver, content = self.get_rvc()
-        if content:
+        if content is not None:
             package_content = content.filter(
                 name_normalized=package, version=version, filename=filename
             ).first()