Add wsPort to app:getNodeInfo

[JesusTheHun]

Description

We need to have the wsPort of a node expose to the outside world.

Motivation

1. One may want to add a reputable node as a fixed peers, the wsPort is required for that.

2. In a cluster all nodes may have the same public ip. This causes an issue with the lisk p2p system because all peers are referenced with their public ip & port. So when running several nodes behind the same public ip, we must use different ports in order to not be referenced as duplicate connection among peers. To be able to use different ports, we must know what ports are currently in use, hence the need for that to be exposed by the node.

Acceptance Criteria

• network.port must be exposed publicly