##### SUMMARY
When installing a collection, all files are created with mode 0600. This is caused by the way the collection .tar.gz file is extracted: https://github.com/ansible/ansible/blob/d3ec31f8d5683926aa6a05bb573d9929a6266fac/lib/ansible/galaxy/collection.py#L1076-L1090 The file created by `tempfile.NamedTemporaryFile()` seems to have mode `0600` and is simply moved to the final destination without a following `os.chmod`.

(See also this discussion: https://github.com/ansible-collections/community.general/pull/29#discussion_r396147440)

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
lib/ansible/galaxy/collection.py

##### ANSIBLE VERSION
```
2.9
2.10
```

files_manifest_json = to_bytes(json.dumps(file_manifest, indent=True), errors='surrogate_or_strict')
    collection_manifest['file_manifest_file']['chksum_sha256'] = secure_hash_s(files_manifest_json, hash_func=sha256)
    collection_manifest_json = to_bytes(json.dumps(collection_manifest, indent=True), errors='surrogate_or_strict')
    with _tempdir() as b_temp_path:
        b_tar_filepath = os.path.join(b_temp_path, os.path.basename(b_tar_path))
        with tarfile.open(b_tar_filepath, mode='w:gz') as tar_file:
            
            for name, b in [('MANIFEST.json', collection_manifest_json), ('FILES.json', files_manifest_json)]:
                b_io = BytesIO(b)
                tar_info = tarfile.TarInfo(name)
                tar_info.size = len(b)
                tar_info.mtime = time.time()
                tar_info.mode = 0o0644
                tar_file.addfile(tarinfo=tar_info, fileobj=b_io)
            for file_info in file_manifest['files']:
                if file_info['name'] == '.':
                    continue
                
                filename = to_native(file_info['name'], errors='surrogate_or_strict')
                b_src_path = os.path.join(b_collection_path, to_bytes(filename, errors='surrogate_or_strict'))
                def reset_stat(tarinfo):