+ renamed config vars for L1 parallel sync

[joanestebanr]

Closes #2767

What does this PR do?

Next parameters have been changed:

L1SynchronizationMode = parallel
	[Synchronizer.L1ParallelSynchronization]
		MaxClients = 10
		MaxPendingNoProcessedBlocks = 25
		RequestLastBlockPeriod = "5s"
		RequestLastBlockTimeout = "5s"
		RequestLastBlockMaxRetries = 3
		StatisticsPeriod = "5m"
		TimeoutMainLoop = "5m"
		RollupInfoRetriesSpacing= "5s"
		FallbackToSequentialModeOnSynchronized = false
		[Synchronizer.L1ParallelSynchronization.PerformanceWarning]
			AceptableInacctivityTime = "5s"
			ApplyAfterNumRollupReceived = 10

this are the old ones:

UseParallelModeForL1Synchronization = true
	[Synchronizer.L1ParallelSynchronization]
		NumberOfParallelOfEthereumClients = 10
		CapacityOfBufferingRollupInfoFromL1 = 25
		TimeForCheckLastBlockOnL1Time = "5s"
		TimeoutForRequestLastBlockOnL1 = "5s"
		MaxNumberOfRetriesForRequestLastBlockOnL1 = 3
		TimeForShowUpStatisticsLog = "5m"
		TimeOutMainLoop = "5m"
		MinTimeBetweenRetriesForRollupInfo = "5s"
                SwitchToSequentialModeIfIsSynchronized = false
		[Synchronizer.L1ParallelSynchronization.PerformanceCheck]
			AcceptableTimeWaitingForNewRollupInfo = "5s"
			NumIterationsBeforeStartCheckingTimeWaitinfForNewRollupInfo = 10	

Reviewers

@ARR552
@agnusmor