Ensure global state update after all governance operations

[dapp-whisperer]

Test suites that force Collateral index change before running the test.

It makes more sense to run these as part of existing tests, with a bool that causes index to rebase positively (or stay the same if false), rather than duplicate a bunch of test logic.

That said wrote some new tests to verify here

Before global index update on governance functions:

After update: