/usr/lib/python2.7/dist-packages/charmtools/templates/chef/files/cookbooks/relation-name-relation/metadata.rb is in charm-tools 2.1.2-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | maintainer "$metadata.maintainer"
maintainer_email "$metadata.maintainer"
license "GPL-3"
description "$metadata.summary"
version "0.1"
name "relation-name-relation"
depends "juju-helpers"
|