describeRDS.go

Uses AWS API to get info about database instances.

export AWS_REGION= whatever your region is

USAGE:

    describeRDS -c	
    Calculates average CPU usage last 5 minutes

    describeRDS -d <dbInstance>
    Describes Database Instance - If blank describes all in the Region.
    
   describeRDS -l 
    Lists databaseInstances in region
    
   describeRDS -f
    Shows free storage in GBytes for all non-aurora dbInstances.