Get forwarder setup on WEC instance ^

[danjoneslf]

• [x] Add an exec role with permission to assume the forwarder role
• [x] Add exec role to forwarder trust
• [x] Get setup script onto WEC instance
• [x] Create an HEC for test environment
• [x] Run the setup
• [x] Validate data in Splunk

[danjoneslf]

This isn't actually done until we know it works

[danjoneslf]

This isn't quite working. It's downloading and evaluating the app successfully but for some reason failing to unpack it.