* adding checksum check at validator client and beacon node
* adding validation and logs on validator client startup
* moving the log and validation
* fixing unit tests
* adding test for back checksum on validator client
* fixing bazel
* addressing comments
* fixing log display
* Update beacon-chain/node/config.go
* Apply suggestions from code review
* breaking up lines
* fixing unit test
* ugh another fix to unit test
Co-authored-by: Raul Jordan <raul@prysmaticlabs.com>
Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>
