Show total number of on-demand/reserved instances as a fraction

[matl33t]

Currently, output for audit shows something like

Linux VPC us-east-1e m4.2xlarge: 0 <green>
Linux VPC us-east-1e m4.xlarge: -1 <yellow>
Linux us-east-1c c4.2xlarge: -4 <yellow>
Linux VPC us-east-1e t2.small: 2 <red>

I think perhaps it may be more informative to show it as a fraction of
{total_reserved}/{total on-demand}
rather than the difference between on-demand and reserved, like

Linux VPC us-east-1e m4.2xlarge: 12/12 <green>
Linux VPC us-east-1e m4.xlarge: 4/5 <yellow>
Linux us-east-1c c4.2xlarge: 3/7 <yellow>
Linux VPC us-east-1e t2.small: 8/6 <red>

Would you find this useful? If so, I don't mind doing the legwork for implementing this change.

[matl33t]

Using some generated data, I was able to produce this output:

where:
"Permanent" represents untagged instances (ones without no-reserved-instance
"Temporary" represents tagged instances (marked with no-reserved-instance)
"Unutilized" represents leftover reserved instances that are just burning money as they can't be associated with any running instance.

[bbergstrom]

👍

[emmahsax]

I love the look of this output! We should go ahead and try to implement it.