More pruning scenario

[asdacap]

• Added more pruning test scenario.

Changes:

• Added test for sidechain of at least lenght 2.
• Added test with two consecutive sidechain.
• Added test which trigger memprune but not persist.
• Fixes trie exception on the scenario.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Other (please describe):

Testing

Requires testing

• Yes
• No

In case you checked yes, did you write tests??

• Yes
• No

Comments about testing , should you have some (optional)

Further comments (optional)

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