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## Issue being fixed or feature implemented
<!--- Why is this change required? What problem does it solve? -->
<!--- If it fixes an open issue, please link to the issue here. -->
## What was done?
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It was requested by service desk to hide old banned masternodes when
calling rpc `masternodelist`.
The period from which a masternode is considered old banned is more than
a `SuperblockCycle`.
| Network | SuperblockCycle |
| ------------- |:-------------:|
| Mainnet | 16616 |
| Testnet | 24 |
| Devnet | 24 |
| Regtest | 10 |
The new mode `recent` was added to in order to hide old banned
masternodes.
Note: If the mode `recent` is used, then the reply mode is `JSON` (can
be additionally filtered)
## How Has This Been Tested?
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## Breaking Changes
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## Checklist:
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- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [x] I have added or updated relevant unit/integration/functional/e2e
tests
- [x] I have made corresponding changes to the documentation
**For repository code-owners and collaborators only**
- [x] I have assigned this pull request to a milestone
