[nova] Configure weights for HvRamClassWeigher
[nova] Configure weights for HvRamClassWeigher

We still want VMs to not move in resize, because moving VMs is always a
risk and takes more time. Therefore, we have to adjust the weight of the
PreferSameHostOnResizeWeigher in addition to adding a weight for the
HvRamClassWeigher.

sapcc/helm-charts,sapcc/helm-charts,sapcc/helm-charts,sapcc/helm-charts