Implement GroupSet updatable for AWS::EC2::NetworkInterface

Implement the 'GroupSet' updatable for
AWS::EC2::NetworkInterface resource to be compatible
with AWSCloudFormation.

Change-Id: Ia92c6d2732fdafc659d1a9a1db01cb66be9a9bc0
Closes-Bug: #1334212
Merge "Implement GroupSet updatable for AWS::EC2::NetworkInterface"