Set up and test aws budgets

[shawngerrard]

To manage our resource usage in the cloud, we would need to have controls in place to avoid needless or accidental overspend. For our ec2 instances, aws provides budgets to fulfil that capability.

We need to setup aws budgets to:

1. Limit aws spending on ec2 instances to a reasonable daily limit. Initially, this should be limited to a single ec2 instance daily spend.
2. Limit aws spending on all other services to nil.

This should also be discussed amongst the team as to how these controls should be configured moving forward.