* Add flag for attester protection
* Merge branch 'master' of https://github.com/prysmaticlabs/Prysm into protecc-attester-db
* Merge branch 'master' of https://github.com/prysmaticlabs/Prysm into protecc-attester-db
* Remove flags
* Add attestation history DB functions to validator client
* Fix comments
* Update interface to new funcs
* Merge branch 'master' of https://github.com/prysmaticlabs/Prysm into protecc-attester-db
* Fix test
* Merge branch 'master' into protecc-attester-db
* Begin adding DB to validator client
Begin adding ValidatorProposalHistory
Implement most of proposal history
Finish tests
Fix marking a proposal for the first time
Change proposalhistory to not using bit shifting
Add pb.go
Change after proto/slashing added
Finally fix protos
Fix most tests
Fix all tests for double proposal protection
Start initialiing DB in validator client
Add db to validator struct
Add DB to ProposeBlock
Fix test errors and begin mocking
Fix test formatting and pass test for validator protection!
Fix merge issues
Fix renames
Fix tests
* Fix tests
* Fix first startup on DB
* Fix nil check tests
* Fix E2E
* Fix e2e flag
* Fix comments
* Fix for comments
* Move proposal hepers to validator/client to keep DB clean
* Add clear-db flag to validator client
* Fix formatting
* Clear out unintended changes
* Fix build issues
* Fix build issues
* Gazelle
* Fix mock test
* Remove proposal history
* Add terminal confirmation to DB clearing
* Add interface for validatorDB, add context to DB functions
* Add force-clear-db flag
* Cleanup
* Update validator/node/node.go
Co-Authored-By: Raul Jordan <raul@prysmaticlabs.com>
* Change db to clear file, not whole folder
* Fix db test
* Fix teardown test
Co-authored-by: Raul Jordan <raul@prysmaticlabs.com>
