Merge pull request 'Added rm of tmpfile.' (#330) from mark/cdist:__ssh_authorized_keys-rm into master

Reviewed-on: ungleich-public/cdist#330

cdist/conf/type/__ssh_authorized_key/gencode-remote

@@ -40,6 +40,7 @@ if [ -f "$file" ]; then
    grep -v -F -x '$line' '$file' >\$tmpfile
 fi
 cat "\$tmpfile" >"$file"
+rm -f "\$tmpfile"
 DONE
 }