Add warning for "Port Security" checkbox somewhere on cloud.rc info

What is inaccurate?

The "Port Security" checkbox controls how virtual devices and instances may be accessed via ethernet. While the box is checked, any existing security groups are in effect. When the box becomes unchecked, no security groups are in effect and are all removed from the associated port/device (check on this precisely).

While the box is unchecked, it is equivalent to having a fully-accessible security group (i.e. all ports and IPs on all protocols have ingress/egress access).

It isn't clear where to put this. Likely 99% of users will never see a port in the Horizon interface, and some digging is required. That said, this is a non-obvious security hole (which can get caught in security sweeps), so it would be helpful to cover our bases and have something to point to.

Where is the inaccuracy?

https://docs.rc.uab.edu/uab_cloud/ somewhere...