Prune iavlstore version using rootstore version(block height)

[chengwenxi]

Summary

We pruned the app state(each iavlstore tree for each module) version, reserving only the following versions:

• First version
• Recent 100 versions
• Per 10000 versions

The version increased with each commit, so if we load the store on InitChainer, the version is block height, but if we load the store on a software upgrade height, the version is block_height - upgrade_height. But now we pruned iavlstore version using itself version, so each iavlstore snapshot height(Per 10000 versions) may be different if you loaded each iavlstore on different block height.

So, we can't reset app state to a snapshot height if there are some new modules are added on software upgrade height(height%10000!=0).

Proposal

Prune ivalstore version using rootstore version(block height).

[shilei-wang]

confirm fixed