Add name regex filters

fixes pulp#4432

CHANGES/4432.feature

@@ -0,0 +1 @@
+Added filters ``name__regex`` and ``name__iregex`` to various endpoints.

pulpcore/app/viewsets/base.py

@@ -39,6 +39,8 @@
     "icontains",
     "startswith",
     "istartswith",
+    "regex",
+    "iregex",
 ]
 # e.g.
 # /?name=foo

pulpcore/tests/functional/api/test_repos.py

@@ -48,3 +48,22 @@ def test_repository_content_filters(
     # but not in its latest version anymore
     results = file_repository_api_client.list(latest_with_content=content.pulp_href).results
     assert results == []
+
+
+@pytest.mark.parallel
+def test_repository_name_regex_filters(file_repository_factory, file_repository_api_client):
+    """Test repository's name regex filters."""
+    uuid = uuid4()
+    repo = file_repository_factory(name=f"{uuid}-regex-test-repo")
+    pattern = f"^{uuid}-regex-test.*$"
+
+    results = file_repository_api_client.list(name__regex=pattern).results
+    assert results == [repo]
+
+    # upper case pattern
+    results = file_repository_api_client.list(name__regex=pattern.upper()).results
+    assert repo not in results
+
+    # upper case pattern with iregex
+    results = file_repository_api_client.list(name__iregex=pattern.upper()).results
+    assert results == [repo]