This fixes the following panic for Gnosis Chain on the validator switch
at block 9186425:
```
panic: method 'getValidators' not found
goroutine 90 [running]:
github.com/ledgerwatch/erigon/consensus/aura.(*ValidatorSafeContract).getListSyscall(0x14000ed9358, 0xd40004bf620)
github.com/ledgerwatch/erigon/consensus/aura/validators.go:634 +0x258
github.com/ledgerwatch/erigon/consensus/aura.(*ValidatorSafeContract).epochSet(0x16?, 0x20?, 0x8c2c79, {0xd4002d77180, 0x25f, 0x25f}, 0x11400fac7ee8?)
github.com/ledgerwatch/erigon/consensus/aura/validators.go:453 +0xdc
github.com/ledgerwatch/erigon/consensus/aura.(*ValidatorContract).epochSet(0x140006ae980?, 0x38?, 0x6f9d00000000c28e?, {0xd4002d77180?, 0x108acc108?, 0x40?}, 0x14000618000?)
```
* General cleanup and fixes
* Cleaning part 2
* cleanup part 3
* Refactored staterunner to have a handler function
* Fixed linting
* Cleanup part 4
* Changed the initialization of the require package and updated .golangci.yml
* Fixed lint errors from golangci-lint
* deleted state_recon_1.go
* fixed build error
* Added ReadHeaderTimeouts for httpServer
* made changes to golangci
* Reset golangci.yml
* handle chain flag in integration
* handle chain flag in integration
* handle chain flag in integration
* save
* save
* merge devel
* save
* noopWriter - one is enough
* chain spec parser
* chain spec parser
* embed
* embed
* embed
* embed
* embed
* embed
* embed
* clean
* clean
* correct alloc after reset state
* correct alloc after reset state
* correct alloc after reset state
* integration reset state now does re-apply genesis and chainConfig
* eips summary
* eips summary
* eips summary
