Set block_start based on Node's version, and purge historical data

[HenryQW]

What feature is it?

Each Node's version should have a list of block_start for all workers.

What problem does this feature solve?

• Reduce the cost of operating a Node by purging historical data
• Make all Nodes consistent (data coverage)

Additional description

[brucexc]

It also includes some configuration information that changes with node version variations. For instance, the current version supports networks and workers along with their corresponding configuration information.