add post LIP-36 integration test

[kyriediculous]

What does this pull request do? Explain your changes. (required) Completes test/integration/Earnings.js with post LIP-36 cases

Specific updates (required)

• Changed acceptable delta from 0.001 to 0.01

Alternatives Keep acceptable delta in the tests at 0.001 but change the MathUtils.sol , PERC_DIVISOR to 1*10^9 This affects other contracts that use MathUtils though

How did you test each of these updates (required) Ran tests

Added console log statements to cumulativeEarningsAndCheck function to see that the delta doesn't exceed the maximum I anticipated (0.005)

        console.log("actualTranscoderRewardShare", transcoderRewardShare.toString())
        console.log("expTranscoderRewardShare", expTranscoderRewardShare.toString())
        console.log("reward delta", transcoderRewardShare.sub(expTranscoderRewardShare).abs().toString())
        console.log("actualTranscoderFeeShare", transcoderFeeShare.toString())
        console.log("expTranscoderFeeShare", expTranscoderFeeShare.toString())
        console.log("fee delta", transcoderFeeShare.sub(expTranscoderFeeShare).abs().toString())
        console.log("\n")

Does this pull request close any open issues?

[coveralls]

Pull Request Test Coverage Report for Build 6fa9190f-03a1-4748-b629-ed2518b1df62

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 99.719%

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Totals
Change from base Build d3c57f16-2339-45eb-81ea-de8ce2d8ec08:	0.0%
Covered Lines:	745
Relevant Lines:	746

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💛 - Coveralls

[yondonfu]

Incorporated these changes with a few small tweaks discussed offline in fcedeac