Middleware - Relay NetApp configuration

[Artonus]

Middleware needs to support, deploy and configure Relay NetApp to enable end-to-end communication between NetApp Client and NetApps in the Cloud environemnts

[Artonus]

Work to be done in the 164-middleware-relay-netapp-configuration branch:

Relay NetApp has to be deployed in the same Pod when ROS1 NetApp is deployed.

• Add a new container to be deployed when NetApp is using ROS1. (see Ros1ConnectionBuilder)
• Container needs to use Image but5gera/relay_network_application:0.1.0
• Service needs to be exposed to accept websockets (port 80?)

Setting up the environment variables:

• Set the ROS_MASTER_URI environment variable for Relay NetApp
• Set TOPIC_LIST env var to the RlayNetApp. The value has the following format: '[{"topic_name": "/image_raw", "topic_type": "sensor_msgs/Image"}]`
• The contents of the env variable have to be read from the Instance RosTopicSubscribers and RosTopicPublishers, parsed (built-in json serializer will be the best here I think) and assigned to env

NetApp Client

• NetApp Client has to read the topics from the Middleware plan - TBD

Orchestrator:

• Send a message to the Gateway to open a new route to the NetApp during the deployment
• Send a message to the Gateway to close the route to the NetApp during the termination