Add migration to fix coretime state

[seadanda]

The LeaseOffset was not taken into consideration in the Polkadot migration that ran when ref 1143 enacted and upgraded the relay chain, so the end timeslices of the leases are short by about 64 days.

This PR adds a migration to fix the Coretime state, which currently includes end timeslices which are incorrect.

Full notes and plan here: https://hackmd.io/kurv6rTXTF6yvaUJ9uSNoQ for work to continue while I'm OOO

try-runtime tests are included in the PR and the HackMD linked above includes steps to manually test the upgrade with chopsticks.

[tdimitrov]

I've pushed the changes I've suggested in order to ease the code review. Motivation for each change was added as a comment initially.

try-runtime tests are passing modulo the case for PotentialRenewals. I'm not sure how it should be handled.

[eskimor]

Reworked + fixed tests. The only thing that is really still missing now is weights. Can we just benchmark the function?

[eskimor]

Complete Workplan after migration:

0, CoreAssignment::Task(1001), 287565 1, CoreAssignment::Task(1002), 287565 2, CoreAssignment::Task(1000), 287565 3, CoreAssignment::Task(1004), 287565 4, CoreAssignment::Task(1005), 287565 5, CoreAssignment::Task(2094), 287565 6, CoreAssignment::Task(2040), 287565 7, CoreAssignment::Task(2035), 287565 8, CoreAssignment::Task(3344), 287565 9, CoreAssignment::Task(3370), 287565 10, CoreAssignment::Task(3367), 287565 11, CoreAssignment::Task(2086), 287565 12, CoreAssignment::Task(2032), 287565 13, CoreAssignment::Task(3333), 287565 14, CoreAssignment::Task(2051), 287565 15, CoreAssignment::Task(2106), 287565 16, CoreAssignment::Task(3369), 287565 17, CoreAssignment::Task(2008), 287565 18, CoreAssignment::Task(2025), 287565 19, CoreAssignment::Task(2000), 287565 20, CoreAssignment::Task(2092), 287565 21, CoreAssignment::Task(2002), 287565 22, CoreAssignment::Task(3359), 287565 23, CoreAssignment::Task(2030), 287565 24, CoreAssignment::Task(3378), 287565 25, CoreAssignment::Task(2104), 287565 26, CoreAssignment::Task(2046), 287565 27, CoreAssignment::Task(3345), 287565 28, CoreAssignment::Task(3340), 287565 29, CoreAssignment::Task(3338), 287565 30, CoreAssignment::Task(2004), 287565 31, CoreAssignment::Task(3377), 287565 32, CoreAssignment::Task(3373), 287565 33, CoreAssignment::Task(2031), 287565 34, CoreAssignment::Task(3389), 287565 35, CoreAssignment::Task(3366), 287565 36, CoreAssignment::Task(2037), 287565 37, CoreAssignment::Task(2034), 287565 38, CoreAssignment::Task(2090), 287565 39, CoreAssignment::Task(3346), 287565 40, CoreAssignment::Task(2012), 287565 41, CoreAssignment::Task(3397), 287565 42, CoreAssignment::Task(2043), 287565 43, CoreAssignment::Task(2091), 287565 44, CoreAssignment::Task(2093), 287565 45, CoreAssignment::Task(2026), 287565 46, CoreAssignment::Task(3388), 287565 47, CoreAssignment::Task(2101), 287565 48, CoreAssignment::Task(3354), 287565 49, CoreAssignment::Task(2006), 287565 50, CoreAssignment::Task(2013), 287565 56, CoreAssignment::Task(2048), 287565 57, CoreAssignment::Task(3375), 287565 58, CoreAssignment::Task(3358), 287565 59, CoreAssignment::Task(2053), 287565 60, CoreAssignment::Task(2056), 287565 61, CoreAssignment::Pool, 287565

Output of:

./target/release/try-runtime create-snapshot  --uri wss://coretime-polkadot.dotters.network ./snapshot-coretime-current

RUST_BACKTRACE=1 RUST_LOG=runtime::bootstrapping::fix-migration=debug ./target/release/try-runtime  --runtime ../fellowship-runtimes/target/debug/wbuild/coretime-polkadot-runtime/coretime_polkadot_runtime.wasm on-runtime-upgrade snap -p ./snapshot-coretime-current

[eskimor]

To determine the correct lease endings and the paras that have been dropped, I used the following adjusted migration from the relay chain:

https://github.com/polkadot-fellows/runtimes/compare/main...eskimor:fellowship-runtimes:rk-determine-missing-chains?expand=1

and ran it at the migrating block via try-runtime:

./target/release/try-runtime create-snapshot  --uri wss://rpc-polkadot.luckyfriday.io -a 0x07886d8260a5f0436eda29bf847af211eb53c975754002675ab0e78022441c62 ./snapshot-update
RUST_LOG=coretime-migration=trace ./target/release/try-runtime  --runtime ../fellowship-runtimes/target/debug/wbuild/polkadot-runtime/polkadot_runtime.wasm on-runtime-upgrade --disable-spec-version-check snap -p ./snapshot-update

The upgrading block hash I determined via subscan: Filter list of events (System -> CodeUpdated): https://polkadot.subscan.io/event?page=1&time_dimension=date&module=system&event_id=codeupdated 12 days ago is the one we are looking for: https://polkadot.subscan.io/block/22572435

[bkchr]

/merge

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