Created new chapter in System Configuration Guide
Acted on Greg's comments
Changed the AWS occurences and hostnames
Fixed merge conflict
https://review.opendev.org/c/starlingx/docs/+/788616
Signed-off-by: Adil <mohamed.adilassakkali@windriver.com>
Change-Id: Id4406152d108326125b32911b7d73e805068cf5e