Added linux cleanup for machine-id to regenerate it on VM startup

[sparshev]

Description

It seems that vmware dhcp will gladly give the leased IP to another machine if it will have the same machine-id (systemd uses for dhcp client request), so it needs to be cleaned up before wrapping the image to not cause same IP use in parallel execution.

Related Issue

fixes: #16

How Has This Been Tested?

Manually

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] I have signed the Adobe Open Source CLA.
• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.