Add multiple Security Groups to EMR Cluster

[nateiam]

As a Herd Cluster Mgmt user I want to add multiple Security Groups to a Cluster Definition (or Cluster Start) so I can ensure access to other resources in the environment.

Currently users have to perform this as bootstrap actions

Acceptance Criteria

• Add more than one (but still less than AWS max) number of Security Groups when creating a Cluster Definition or calling Cluster Start
• All Security Groups in the cluster definition are active on the appropriate nodes when the cluster is started