consensus: backport abci and consensus metrics (#9273)

Partial backport of #8480

state/execution.go

@@ -233,6 +233,10 @@ func (blockExec *BlockExecutor) ApplyBlock(
 	}
 	if len(validatorUpdates) > 0 {
 		blockExec.logger.Debug("updates to validators", "updates", types.ValidatorListString(validatorUpdates))
+		blockExec.metrics.ValidatorSetUpdates.Add(1)
+	}
+	if abciResponses.EndBlock.ConsensusParamUpdates != nil {
+		blockExec.metrics.ConsensusParamUpdates.Add(1)
 	}
 
 	// Update the state with the block and responses.