Update readme

More bash issues

Bash syntax error...

Fix sudo package

Make sure sudo is installed, and add a helper for checking commands and installing packages

Don't put UsePAM in a Match block

Needed to quote the date -u param as it has spaces

Rename setup.sh to setup_managed_node.sh

Make sure sbin is in the path for useradd

Add REAMDE.md

Initial script to prep a new node for ansible