Atomic swingset upgrade actions

[mhofman]

closes: #8279

Description

Builds on #8112 to run the core proposals part of an upgrade to completion within the upgrade block.

Security Considerations

With an infinite meter, there is a risk that a buggy core proposal or the remaining Swingset work executed before may never run to completion and effectively stall the chain.

Scaling Considerations

This will cause all upgrade work to happen in the upgrade block, which may take arbitrarily long.

Documentation Considerations

None

Testing Considerations

Updated the docker test to verify the network vat is available as soon as the pre test starts, however the docker test infra does not make it possible to test this immediately once the upgrade block is committed, so really it's a best effort.

Upgrade Considerations

Yes

[mhofman]

Best reviewed commit-by-commit and white space hidden

[michaelfig]

I'll have a look at this tomorrow. When you're up-and-about, can you PTAL at https://github.com/Agoric/agoric-sdk/actions/runs/6032610362/job/16368096857?pr=8287#step:5:25 ?

2023-08-31T03:20:37.830Z fake-chain: Cannot boot sim chain: (TypeError#1)
TypeError#1: Cannot destructure property 'beans_per_unit' of 'params' as it is undefined.

  at parseParams (packages/cosmic-swingset/src/params.js:35:21)
  at doBlockingSend (packages/cosmic-swingset/src/launch-chain.js:745:40)

[mhofman]

Yeah I missed an update to synthetic blocking sends created by simchain. The real chain will have params on the bootstrap block, so the sim chain should too.

[michaelfig]

Looking good! Thanks for sorting out the prioritization that I balked at. :)