Include full filename in parsed manifest dictionary

- Added filename to returned dict in _parse_pbs_filename.

- Removed redundant assignment in _parse_manifest_file.

- Verified with bazel query.

TAG=agy

CONV=349f7308-5fc3-4072-83a2-d1d04e5bdc48

Author: rickeylev

python/private/python.bzl

@@ -792,6 +792,7 @@ def _parse_pbs_filename(filename):
     return {
         "arch": arch,
         "build_version": build_version,
+        "filename": filename,
         "flavor": flavor,
         "libc": libc,
         "microarch": microarch,
@@ -814,7 +815,6 @@ def _parse_manifest_file(content):
         parsed = _parse_pbs_filename(filename)
         if parsed:
             parsed["sha256"] = sha256
-            parsed["filename"] = filename
             results.append(parsed)
     return results