Allow scaling down nodepools in 'out-of-capacity' situations

[Elektronenvolt]

Allow scaling down nodepools in 'out-of-capacity' situations during 'Update-AksHci':

Description:
If I have a cluster with too less memory left to create a new VM and start an Update-AksHci - the update will start but wait in an out-of-capacity loop until there is enough memory freed up to create a new VM.

One option is to scale down a nodepool, but scaling a nodepool is blocked in this situation:

Second option is to delete a nodepool, what succeeded and Update-AksHci continued.

Feature Request:
Please allow scaling down nodepools in out-of-capacity situations. We do not have anytime multiple nodepools available, where we can easily delete one, in case we run into an update hang because of running out of resources.