Describe the bug
When trying to promote a build, Promotion Plugins aren't fetched from Artifactory. The problem seems to occur because a wrong endpoint, /api/storage, is used. According to the documentation the correct endpoint should be: /api/plugins.

To Reproduce

1. Deploy a user plugin in Artifactory
2. Try to promote a build in Jenkins
3. No Promotion Plugins will show up.

Expected behavior
The deployed user plugin would show up, but it doesn't.

Screenshots

Versions

• Jenkins Artifactory plugin version: 3.16.1
• Jenkins operating system: Fedora
• Artifactory Version: 6.23.13

Additional context
I have access to an older instance of Jenkins running the Artifactory plugin at version 3.8.1 but also using Artifactory version 6.23.13 and that works fine.