fix(drive)!: masternode identities sync from begging after restart

[shumkov]

Issue being fixed or feature implemented

Drive syncs masernode identities since the beginning after restart

What was done?

• Store last synced core height

How Has This Been Tested?

With integration tests

Breaking Changes

Previous chain data won't be valid

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have added or updated relevant unit/integration/functional/e2e tests
• I have made corresponding changes to the documentation

For repository code-owners and collaborators only

• I have assigned this pull request to a milestone

[shuplenkov]

Looks good!