[CurvePB] Migrate to new CurvePB.

[clement-ux]

Description

This PR only create Governance script to migrate to new CurvePB.
This pending governance proposal will upgrade PoolBooster CentralRegistry to support new CurvePoolBoosterFactorty, which support new CurvePoolBooster.
Once this proposal succeed, it could be possible to execute this one that:

• Deploy CurvePB using the new CurvePBFactory, corresponding to the 4 CurvePB we already have.
• UndelegateYield from related CurvePool to CurvePoolBooster
• DelegateYield from related CurvePool to new CurvePoolBooster.
• RescueToken (OETH or OUSD) from old CurvePB and send them to new CurvePB.

New CurvePB address have been computed using this contract "0xB6073788e5302122F4DfB6C5aD53a1EAC9cb0289".

[sparrowDom]

LGTM

[shahthepro]

• All deployed contracts are listed in the deploy PR's description
  • Found 0xb929fD0C424B0c5e19DCF2E32abd18E65A50D0F1 and 0xB6073788e5302122F4DfB6C5aD53a1EAC9cb0289 from governance proposal
• Deployed contract's verified code (and all dependencies) match the code in master
• Contract constructors have correct arguments
• The transactions that interacted with the newly deployed contract match the deploy script.
• Governance proposal matches the deploy script
• Smoke tests pass after fork test execution of the governance proposal

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 39.02%. Comparing base (7fbff1d) to head (6138e06).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2768      +/-   ##
==========================================
- Coverage   39.62%   39.02%   -0.61%     
==========================================
  Files         126      126              
  Lines        5825     5825              
  Branches     1546     1546              
==========================================
- Hits         2308     2273      -35     
- Misses       3515     3550      +35     
  Partials        2        2              

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[sparrowDom]

fyi We can execute this proposal tomorrow 11 AM CEST

[clement-ux]

fyi We can execute this proposal tomorrow 11 AM CEST

Yep, this is planned :)