Integration test custom peer select functions - Closes1131

[ishantiw]

Description

Add Integration tests should contain the use of custom peer selection algorithm. In this way, we can be sure about the way we pass custom peer selection to the P2P constructor and its working.

It should cover tests for both,

peerSelectForSendRequest peerSelectForConnection

Review checklist

• The PR resolves #1131
• All new code is covered with unit tests
• All new code was formatted with Prettier
• Linting passes
• Tests pass
• Commit messages follow the commit guidelines
• Documentation has been added/updated