Various fixes

- apt-key is deprecated, copy unarmored keyfile instead
- fixes for lint, metadata, galaxy, etc.

Change-Id: I4849a15c1ffbe4ed2048ff2a2e0170c2baff4622
diff --git a/.reuse/dep5 b/.reuse/dep5
index 94db299..e6dcb9c 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/docker.gpg
+Files: files/docker-keyring.gpg
 Copyright: GPG Key Data
 License: CC0-1.0