On debian 11 don't use external APT repo

- Change apt gpg key operations to avoid deprecated apt-key command
- Backup config files on changes
- Metadata for galaxy
- Updates for newer ansible-lint

Change-Id: I5f9a75141dd64f867b81c899f1a2c933c51737d6
diff --git a/.reuse/dep5 b/.reuse/dep5
index 0dec132..c6dcb59 100644
--- a/.reuse/dep5
+++ b/.reuse/dep5
@@ -1,9 +1,9 @@
 Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
 
-Files: .cookiecutter_params.json VERSION .gitreview
+Files: .cookiecutter_params.json VERSION .gitreview README.md
 Copyright: 2020 Open Networking Foundation
 License: Apache-2.0
 
-Files: files/bird_signing.key
+Files: files/bird-keyring.gpg
 Copyright: GPG Key Data
 License: CC0-1.0