Replace peersConnected() method for testing purposes with an API call in the

[Filter94]

Description

MaruApp.awaitTillMaruHasPeers relies on the peersConnected method to get the number of peers connected to an instance. However we also have the GET /eth/v1/node/peers REST endpoint that should return all the peers connected to it. Instead of exposing the internal peersConnected, we could use the API call

Motivation

This would shrink the MaruApp's API and it would indirectly cover that endpoint with some tests

Tasks

• Remove the peersConnected
• Change MaruApp.awaitTillMaruHasPeers to use the Beacon REST API to check the number of connected peers

Acceptance criteria

• MaruApp doesn't have peersConnected method, MaruApp.awaitTillMaruHasPeers still check the number of node's peers

Risks

• None

Remember to

• Add the documentation label in case there is an impact on the documentation
• Add priority and team labels
• Add Task for updating the Runbook or adding/updating existing metrics and alerts.