redeploy + some fixes

[greged93]

Time spent on this PR: 0.3 day

Pull request type

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• Bugfix
• Feature
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
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What is the current behavior?

Staging can't run correctly currently.

Resolves #NA

What is the new behavior?

• Upgrades Kakarot on staging
• Adds a type of network "staging" which allows upgrades but also uses the "EVM" fixture.

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This change is 

[ClementWalter]

so

        deployments["Counter"] = await deploy("Counter")
        deployments["MockPragmaOracle"] = await deploy("MockPragmaOracle")

were failing on staging? why?

It's ok for me to merge like that but it looks like we miss a NETWORK["type"] that would be an enum (prod/stating/local) instead of addinga a regex like condition on the name for deciding if it's staging

[greged93]

can add the enum, that makes more sense.

I missed the Counter and MockPragmaOracle actually. These aren't merged yet on the commit I am using for the submodule. I guess we should also deploy these in the same way as the EVM, let me update this.

What did fail was that setting the Network to "devnet" caused it to redeploy all the time instead of upgrading which isn't what we were looking for.