Fix verification of contracts created from factory

[vbaranov]

Fixes #3108

Motivation

2020-05-18T12:30:39.169 [error] Task #PID<0.9944.1> started from #PID<0.11593.4> terminating
** (Ecto.MultipleResultsError) expected at most one result but got 2 in query:

from i0 in Explorer.Chain.InternalTransaction,
  where: i0.created_contract_address_hash == ^"0x5933331BB25aAc7fF7BBb22e4E35F65D5882e621",
  select: i0.init

    (ecto 3.3.1) lib/ecto/repo/queryable.ex:104: Ecto.Repo.Queryable.one/3
    (explorer 0.0.1) lib/explorer/chain.ex:2743: Explorer.Chain.smart_contract_creation_tx_bytecode/1
    (explorer 0.0.1) lib/explorer/smart_contract/verifier.ex:95: Explorer.SmartContract.Verifier.compare_bytecodes/6
    (elixir 1.10.2) lib/enum.ex:2111: Enum."-reduce/3-lists^foldl/2-0-"/3
    (explorer 0.0.1) lib/explorer/smart_contract/publisher.ex:29: Explorer.SmartContract.Publisher.publish/3
    (explorer 0.0.1) lib/explorer/smart_contract/publisher_worker.ex:13: Explorer.SmartContract.PublisherWorker.perform/1
    (elixir 1.10.2) lib/task/supervised.ex:90: Task.Supervised.invoke_mfa/2
    (stdlib 3.9) proc_lib.erl:249: :proc_lib.init_p_do_apply/3
Function: #Function<3.104694414/0 in Que.Job.perform/1>

Changelog

Find contract creation internal transactions only from success transaction

Checklist for your Pull Request (PR)

• I added an entry to CHANGELOG.md with this PR
• If I added new functionality, I added tests covering it.
• If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.
• I checked whether I should update the docs and did so by submitting a PR to https://github.com/blockscout/docs
• If I added/changed/removed ENV var, I submitted a PR to https://github.com/blockscout/docs to update the list of env vars at https://github.com/blockscout/docs/blob/master/for-developers/information-and-settings/env-variables.md and I updated the version to master in the Version column. Changes will be reflected in this table: https://docs.blockscout.com/for-developers/information-and-settings/env-variables.
• If I add new indices into DB, I checked, that they are not redundant with PGHero or other tools

[coveralls]

Pull Request Test Coverage Report for Build d1595d59-0662-41fa-9469-d086d165137d

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.05%) to 75.151%

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Files with Coverage Reduction	New Missed Lines	%
apps/block_scout_web/lib/block_scout_web/controllers/chain/market_history_chart_controller.ex	2	71.43%

Totals
Change from base Build 2c071f50-d19d-4090-beb4-aef851452080:	0.05%
Covered Lines:	5710
Relevant Lines:	7598

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💛 - Coveralls