Support docker-compose alternative project name as pytest param

[barelnir]

We run pytest-docker-compose in our CI flow, it works great!

We run our CI on same workloads (same docker engine), if 2 runs are executed simultaneously one will fail because both are getting same docker-compose default project name _default
We would like to have an option to control what will be the project name, in our case we will put there random UUID or Jenkins build number + branch.

The docker-compose flag I refer to is:
-p, --project-name NAME Specify an alternate project name (default: directory name)

[jnawk]

It looks like line 136 of init.py would be the place to put this - I tried a quick hack, it seems to work - of course, I haven't spent the time to figure out how to make it an option, since I suspect it would kill the ability to use running containers.

I'm interested in this capability in order that I can use pytest-parallel to run my tests on a box with many CPUs and much memory in parallel.