Fixes #36663 - Add permission to modify LookupValue resource

[nofaralfasi]

This is necessary when using gql to allow non-admin users to modify lookup-key values.

Required for:

• Fixes #36273 - Use proper permission for editing Ansible variable foreman_ansible#633

[theforeman-bot]

Issues: #36663

[ofedoren]

Thanks, @nofaralfasi, tested with theforeman/foreman_ansible#633. The change in permission_list.rb is enough.

Some questions inline though:

[ofedoren]

Thanks, @nofaralfasi, but the test failure is related.

[nofaralfasi]

I'm uncertain about the proper procedure for including these permissions.
As I understand it, if we're adding permissions exclusively used within the plugin, they should be included in the plugin's register.rb file. On the other hand, if the intention is to incorporate these permissions into the foreman core, we need to define them in the access_permissions.rb file as well, or they might not be generated.

[ofedoren]

Right, so this is actually my bad.

I see two ways to fix that:

1. Easiest: just add these permissions to the ignore list for the test.
2. Proper?: Create a new permission block :lookup_values with mapped permissions for the LookupValuesController, since we have at least that one in access_permissions.rb.

[ofedoren]

Thanks, @nofaralfasi, for bearing with me 🌹 LGTM, works and we're green.