Move connection parameters to phpunit env

[ArthurPatriot]

Hello guys. What you think about to move all connections parameters to phpunit env. For example, I want to test reverb on windows machine, windows doesn't support creating socket connection on 0.0.0.0, I must use local ip. And now, I must add host parameter to each test where present host...

Will be easy to get this parameters from env ($host, $port, $appId). And code will be more clean and reusable. What you think?

[joedixon]

I think it's nice to have the option to spin up multiple servers on different hosts, but I don't think I'm against defaulting to the phpunit environment.

[joedixon]

Would welcome a PR for this, but closing for now.