* Implement SubmitAttesterSlashing in the beacon API
* gzl
* remove migration test rule
* fix BUILD file formatting
Co-authored-by: Raul Jordan <raul@prysmaticlabs.com>
* pool interface and mock
* implementation
* gofmt
* gzl
* Use migration package for slashing mapping
Co-authored-by: Raul Jordan <raul@prysmaticlabs.com>