Ensure sufficient hardware for Tinkerbell upgrade

[chrisdoherty4]

This PR adds assertions run during upgrade to ensure we have sufficient hardware for the upgrade. It supports both Kubernetes version upgrade and scale upgrade additional hardware requirements. It does not support external etcd.

It does not attempt to ensure disks are consistent between provisioned nodes and the hardware for use in the upgrade.

The current cluster specification has not been wired to the upgrade operation as its not passed to SetupAndValidate(). The wiring is in other parts of the code base so will be on a separate PR.

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Skipping CI for Draft Pull Request. If you want CI signal for your change, please convert it to an actual PR. You can still manually trigger a test run with /test all

[codecov[bot]]

Codecov Report

Merging #2707 (c559089) into main (e724e68) will increase coverage by 0.05%. The diff coverage is 61.20%.

@@            Coverage Diff             @@
##             main    #2707      +/-   ##
==========================================
+ Coverage   58.78%   58.83%   +0.05%     
==========================================
  Files         314      314              
  Lines       25725    25820      +95     
==========================================
+ Hits        15122    15191      +69     
- Misses       9281     9301      +20     
- Partials     1322     1328       +6     

Impacted Files	Coverage Δ
pkg/providers/tinkerbell/upgrade.go	0.00% <0.00%> (ø)
pkg/providers/tinkerbell/assert.go	78.43% <79.54%> (+0.65%)	:arrow_up:
pkg/providers/tinkerbell/create.go	49.63% <100.00%> (ø)

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