Add Related_Observables structure to Course_Of_Action

[sbarnum]

Add Related_Observables structure to Course_Of_Action to enable explicit specification of technical details related to a COA.
For example a COA specifying blocking network traffic to 149.89.35.19:80 using a firewall could simply include a Network_Connection observable pattern that specifies a Destination IP of 149.89.35.19 and Port 80.

[johnwunder]

There's a definite need for this, one question is whether it should be directly in Course_Of_Action or whether it should be in an extension off of Structured_COA.

[johnwunder]

The associated proposal was accepted and this change is ready to be implemented.