Make it possible to run CI tests locally for developers

[oxarbitrage]

It will be nice that the developers could run a similar version of the Zebra upstream CI does on their local machines. There are several examples on why this will be a useful tool to have, some of them are:

• There are changes that one could do to CI that will affect all the pull requests and other part of the systems. - For people that are not very familiar it is risky to experiment in the real live thing.
• Sometimes i see changes to CI settings in PRs that are experiments, trying this or that. We could avoid this noise a bit by being able to test before pushing.
• In general the developers don't use entrypoint.sh or docker to run tests locally which is what the CI does, we need a way to run the same thing both places so we can find certain problems easier.

I think we can assume that the developers has (or can easy obtain) an up to date zebra blockchain and a lightwalletd somewhere in the local hard drive.

This can maybe be done by just doing a tutorial, i am not sure, we can discuss more before doing anything.

Suggestions

• Have a script to pass the ENV variables and/or arguments to run specific tests from CI, and be able to match each Rust test name from CI with the variables.
• Change instructions in acceptance.rs to use the entrypoint.sh script to run tests
• Make CI test IDs and Rust test names the same, pass the ID to the script instead of using environment variables