Solved issue with cleanup after fail and a number of bugfixes for AWS

[sparshev]

Now images and VMX Allocation cleans up if something bad happened during the process. And this change also contains a number of bugfixes for AWS driver.

• Cleanup is quite an important feature, otherwise automated Fish is clogging the disk or leftovers from the bad allocations. Also it's good to clean if images was not downloaded/unpacked correctly (I'm looking at you, max opened files on mac!)
• Removing driver from the list if it failed preparation phase - if they are not prepared, so what's the point of having them in the roster...
• 1 minute retry AWS connection on start in case network is not working - caught on mac after reboot, service starts and gets no internet...
• Fixed nasty issue with waiting of AWS instance IP and disks - it sometimes don't get the IP immediately and just waits for 5 microseconds and repeats with 0 result of course.

Related Issue

fixes: #6

How Has This Been Tested?

Automatically

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.