Fix tests

[adria0]

At this moment current OE tests need to be improved (draft PR https://github.com/openethereum/openethereum/pull/11597)

• https://github.com/openethereum/openethereum/issues/10461 If chain specs are not defined, the tests pass. Implemented in openethereum/openethereum@ed33e53 openethereum/openethereum@227c1be
• postState is not verified in BlockchainTests, implemented in openethereum/openethereum@ff6c415
• [json-tests] stRevertTest/RevertPrecompiledTouch_storage state test failures #11078 new ethereum consensus tests #10923 fix stRevertTests
• https://github.com/openethereum/openethereum/issues/11129 Tests need to be updated to v7. Implemented in openethereum/openethereum@8bfba81
• We are using the last develop branch of ethereum/tests. The idea is to fix it to a specific commit because now this approach has three problems
  • It can break the builds any time
  • Is not possible to have a reproducible build&test, this makes checking for regressions more complex
  • Currently geth, that is the filler of the tests, is using another branch, so even not geth is using develop to test the tests generated with retesteth.
• https://github.com/openethereum/openethereum/issues/11085 Now we need to change and sync the code and manually sync the tests, because folders are hardcoded. It is better just to scan the folders and run tests.