The backport of https://github.com/ManageIQ/manageiq-content/pull/417 is reverted. This will now target 5.10 only as per Eng/PM decision. If we decide to fix this in 5.9.z in the future, please re-open this BZ.
right-sizefeature implementation relies on ManageIQ/manageiq-content#418, which has been merged but the associated BZ (1594196) is targeted for 5.10. So it was decided to align ManageIQ/manageiq-content#417 on the same target, i.e. Hammer, and so it was un-backported for consistency.