Store "last allocated IP" in `BlueprintSledConfig`#9550

jgallagher wants to merge 8 commits intojohn/blippy-sled-subnet-checksoxidecomputer/omicron:john/blippy-sled-subnet-checksfrom

john/blueprint-sled-next-ipoxidecomputer/omicron:john/blueprint-sled-next-ipCopy head branch name to clipboard