Native driver implementation

[sparshev]

The native driver will be actually a good idea to run the tests on the actual hardware or run the automated images build using the host installed tools.

I think the best approach is to use the OS capabilities to restrict the access:

• Create new user for each execution
• Mount user home as separated disk with defined space restriction or use quotas
• Native driver: Use firewall and default route manipulation to restrict the network access #52
• Make sure no signs of user data left on the system after the user was removed
• Native driver: Reboot the machine if needed before the next workload #53

Initially MacOS implementation seems a good starting point and when it's done we can think about the other platforms to have the same functionality.

related to: adobe/aquarium-bait#4

[sparshev]

So actually native driver could have more features, like using the static users (#50) and execute setup with elevated privileges before the workload (#51), but for now it's quite enough to check how it will work at all.