fix(gapic-generator): restrict package discovery to gapic* namespace

Author: ohmayr

packages/gapic-generator/setup.py

@@ -61,7 +61,9 @@
     author="Google LLC",
     author_email="googleapis-packages@google.com",
     license="Apache-2.0",
-    packages=setuptools.find_namespace_packages(exclude=["docs", "tests"]),
+    packages=setuptools.find_namespace_packages(
+        exclude=["docs*", "tests*", "testing*", ".*", "bazel*", "rules_python_gapic*"]
+    ),
     url=url,
     classifiers=[
         release_status,