Enhance uninstall / install script with additional features

[ps4signedout]

usecase: migration from US to EU i.e. steps:

1. retrieve uninstall token by using API (no powershell SDK integration)
2. retrieve all relevant tags (sensor AND Falcon) from old environment
3. write all into $hostname.csv (configurable)
4. uninstall sensor
5. verify uninstall
6. download sensor and retrieve CID
7. install sensor including sensor-tags as derived from step 2 from CSV file of #3
8. retrieve maintenance token from new environment
9. set Falcon tags derived in step 2 from CSV file of #3
10. verify sensor
11. remove orphaned host from old environment or set FLAG "moved"

Most probably it will not be one script more like an uninstall.ps1 && install.ps1 approach ;-)

[ffalor]

Changes to install/uninstall:

• [x] Support ProvToken in install script
• [x] Support MAINTENANCE_TOKEN in uninstall script
• [x] Hide host in console after uninstall (via flag)

Migration Script:

• [ ] Add migration script to support migrating falcon clouds