Add additional Total metrics:
- TotalSyncClusters
- TotalSyncErrors
- TotalSyncCount
- TotalSyncDurationSeconds
- AVGSyncDurationSeconds
Rename old metrics for last sync:
- SyncDurationSeconds -> LastSyncDurationSeconds
- SyncedClusters -> LastSyncClusters
- SyncErrors -> LastSyncErrors
- SyncDurationSeconds -> LastSyncDurationSeconds