return public-keys as a list if it is a list

if public-keys in metadata are a list (rather than a dict), then
return them as such.

This allows populating NoCloud keys with:
public-keys:
 - ssh-rsa .... myname.mylabel
 - ssh-dsa .... myname.mylabel2

Or:
cat <<EOF
public-keys:
$(ssh-add -L | sed 's,^\(.*\), - "\1",')
EOF

1 files changed, 3 insertions, 0 deletions

diff --git a/cloudinit/DataSource.py b/cloudinit/DataSource.py
index f38e3b20..1bcb9c10 100644
--- a/cloudinit/DataSource.py
+++ b/cloudinit/DataSource.py
@@ -72,6 +72,9 @@ class DataSource:
         if isinstance(self.metadata['public-keys'], str):
             return([self.metadata['public-keys'], ])
 
+        if isinstance(self.metadata['public-keys'], list):
+            return(self.metadata['public-keys'])
+
         for _keyname, klist in self.metadata['public-keys'].items():
             # lp:506332 uec metadata service responds with
             # data that makes boto populate a string for 'klist' rather