This patch fixes loading issues for pre shared keys for
peers without custom names. In this case the peer's public
key would be used in the name for the corresponding pre
shared key credential, causing a loading error.
The networking.wireguard base module already escapes some
base64 characters of the public key with escape sequences
starting with a backslash. This backslash is now replaced
with an underscore for use in the credential names.
This patch fixes an oversight in the initial implementation
of using systemd credentials in 6bc8dcc630
that would cause a warning to be logged about a missing credential
when presharedKeyFile wasn't set.
This patch fixes systemd credential loading for wireguard
with networkd not working when specifying more than one
credential per interface by properly flattening the resulting
multidimensional list instead of falling back on string concat
with a space.
Resolves#365402
Enabling networking.wireguard.useNetworkd currently requires users to
modify the permissions of their private key files. Since that is a bad
upgrade experience, the module should be disabled by default for now.
Once systemd credential support is added to the module, it should be
safe to once again enable it by default for networkd users.
