Added funtonalty

[james-annages]

What would you like to be added:
The ability to install on systems from a text or CSV file list.
UseAPI token Authentication to connect to the cluster
Change how the Rubrik CLI is installed.
The ability to tell the script to either register the system as a Host on the Rubrik cluster or if it's just registering the RBS on the VM.

Why is this needed:
Convince and better functionary