bug: inconsistent protocol peer management

[danisharora099]

This is a bug report

Problem

The current implementation showcased a lot of inconsistencies around peer management for protocols.
Multiple weird behaviour were observed:

• protocol not able to find new peers from available pool, while it truly existed
• peer renewal for a protocol was unsuccessful about the Peer Manager count didn't reflect that
• protocol sometimes showed a count of available peers much greater than the total actually connected peers

Proposed Solutions

Implement thread-safe management using mutex locks