fix handler csdb usage, fixes consensus error again

[noot]

Closes: #XXX

Description

fix usage of csdb in handler

to test, start 3 docker nodes as per https://github.com/ChainSafe/ethermint/pull/513

then:

git clone git@github.com:ChainSafe/aragonOS
cd aragonOS

update truffle-config.js to have this as the rpc network:

        rpc: {
            network_id: 17,
            host: '172.17.0.2',
            port: 8545,
            gas: 6.9e6,
            gasPrice: 1,
        },

will likely need to install correct truffle version: npm i -g truffle@4.1.14

finally: truffle test test/contracts/apps/app_acl.js --network rpc

---

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• Code follows the module structure standards.
• Wrote unit and integration tests
• Updated relevant documentation (docs/) or specification (x/<module>/spec/)
• Added relevant godoc comments.
• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
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---

For admin use:

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[codecov]

Codecov Report

Merging #516 into development will increase coverage by 0.04%.
The diff coverage is 75.00%.

@@               Coverage Diff               @@
##           development     #516      +/-   ##
===============================================
+ Coverage        72.04%   72.08%   +0.04%     
===============================================
  Files               41       41              
  Lines             2719     2723       +4     
===============================================
+ Hits              1959     1963       +4     
  Misses             615      615              
  Partials           145      145              

Impacted Files	Coverage Δ
x/evm/handler.go	91.73% <75.00%> (+0.28%)	⬆️

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[araskachoi]

no more consensus err

[fedekunze]

LGTM. Minor comment

[fedekunze]

why is this the case?

[noot]

the txCount is used in the stateDB, and since a simulated tx is run only on the node it's submitted to, then this will cause the txCount/stateDB of the node that ran the simulated tx to be different than the other nodes, causing the consensus error

[fedekunze]

ahh great catch! I can we document this on the comments?

[noot]

sure I'll open a follow up with comments!

[fedekunze]

lol, we def need to fix this