Known Issue: Sim Network Startup

[tylerferrara]

The ros-net-sim "simulation network" attempts to startup for each coms node. If the network is found to already be running, it simply skips this step.

However, if we run two coms nodes back to back in a launch file, they BOTH attempt to start the sim ros-net-sim network. This causes errors.

TODO:

• Create a node for ros-net-sim startup
• Add "is-network-up" check for coms.sim.Sim.start() in a while loop with Timeout

This will allow us to create multiple coms nodes in one launch file without inturruptions.