Gensis: Use proper inflation config and eligiblity ratio

[sea212]

Applies proper configuration for parachain-staking at genesis.
The inflation config initialization is adjusted in respect to one pr from moonbeam and the latest state of the code. The new code properly derives per-round inflation based on annual inflation and expected staking amounts. The total inflation based on expected staking amounts now looks like that:

1. If 5% or less of the total supply are staked, the inflation caused by collation and delegation rewards is 2%
2. Between 5% and 15%, the inflation [...] is 3.5%
3. For more than 15%, the inflation [...] is 5%

The changes allow allow to configure different InflationConfig for each network. This won't affect the running networks and can be readjusted once a new network is about to be spawned.

Besides that, the EligibilityRatio is set to 1, meaning that only one collator is selected per block (unless he timeouts). Anything else can lead to network congestion.

[codecov-commenter]

Codecov Report

Merging #960 (aae9064) into main (4c7817e) will decrease coverage by 0.13%.
The diff coverage is 88.26%.

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@@            Coverage Diff             @@
##             main     #960      +/-   ##
==========================================
- Coverage   94.51%   94.39%   -0.13%     
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  Lines       21148    21060      -88     
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- Hits        19989    19880     -109     
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Flag	Coverage Δ
tests	94.39% <88.26%> (-0.13%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
primitives/src/constants.rs	0.00% <ø> (ø)
zrml/court/src/tests.rs	99.20% <ø> (ø)
zrml/market-commons/src/lib.rs	93.42% <ø> (ø)
zrml/market-commons/src/tests.rs	100.00% <ø> (ø)
zrml/prediction-markets/src/mock.rs	78.98% <ø> (ø)
zrml/simple-disputes/src/tests.rs	100.00% <ø> (ø)
zrml/prediction-markets/src/lib.rs	90.47% <68.79%> (-1.90%)	⬇️
zrml/prediction-markets/src/migrations.rs	87.30% <96.11%> (-3.38%)	⬇️
primitives/src/market.rs	71.42% <100.00%> (+1.26%)	⬆️
zrml/prediction-markets/src/tests.rs	99.31% <100.00%> (+0.01%)	⬆️
... and 5 more

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[vivekvpandya]

Apart from few questions rest looks good.

[sea212]

@Chralt98 seems like our CodeCov token is expired. Can you add a new one?

[Chralt98]

I never added a CodeCov token. According to this https://docs.codecov.com/docs/frequently-asked-questions#where-is-the-repository-upload-token-found the token should not be required for public repositories.

https://github.com/codecov/codecov-action#usage

Unable to locate build via Github Actions API .. So it seems like that CodeCov is unable to find the Public Repository of Zeitgeist. Yeah a token would solve the problem. I try to add a secret token.

Added PR #962

[Chralt98]

Ok, this seems like a useful genesis config for the parachain-staking pallet (especially if we want to migrate over to Polkadot).

Currently this is the staking rate on Zeitgeist:

staking_rate = staking_amount / total_issuance

• staking_amount: query from parachainStaking -> total
• total_issuance: query from balances -> totalIssuance

staking_rate = 172185525432272240 / 1021933231948330118 approx. = 16,85%

So with the current inflation plan, we would get an annual inflation of 5% currently.

Although I am personally not a big fan of inflating a currency at all. But it is what it is.