The "quay_storage" volume name in the uninstall task should be "quay-storage" for deleting the volume directory during uninstalling. Because the quay volume creates as "quay-storage" by default when installing. The volume name should be matched. Refer the following codes which show us the place holder of "quay_storage=%s" is "quay-storage" by default as well.

• How to reproduce:
  1. Installed without any options for quayStorage.
  2. Uninstalled without any options for quayStorage.
  3. You can see the "quay-storage" is remained in the "/var/lib/containers/storage/volumes/".
• Expected results:
  The "quay-storage" should be removed when uninstalling with default values.