Support dearmor GPG key for keyring about puppetlabs-apt

[kenyon]

ASCII armored keys are supported. You have to name them with a .asc extension if ASCII armored, and .gpg if binary. This is an APT thing, not an issue with this module. This is documented:

puppetlabs-apt/README.md

Line 70 in 0871cad

You can fetch GPG keys via HTTP, Puppet URI, or local filesystem. The key can be in GPG binary format, or ASCII armored, but the filename should have the appropriate extension (`.gpg` for keys in binary format; or `.asc` for ASCII armored keys).

[kenyon]

Also note that there is a bug in APT that causes it to fail if ASCII armored keys use Windows/DOS text format. You'll want to dos2unix the file first, if you find such a key. Reference: https://salsa.debian.org/apt-team/apt/-/merge_requests/309

[daisukixci]

Gotcha sorry for the trouble and thanks for the quick answer!