inject faults for aws service api calls

[kapilt]

sketch of a config (faults, delays) and implementation
https://gist.github.com/kapilt/eb8f9b82473d7fa8295fbf1d10c11c11

ideally we should be able to control which services, rates, and delay ranges. errors are a little harder to configure, since error codes may need to match up to individual api calls, although there's a few generic ones.

[alexcasalboni]

Does the following make sense for decorator design & local config override?

import boto3
s3 = boto3.client('s3')
@inject_delay(boto=true, services=['s3', 'ssm'])
def lambda_handler_with_boto_delay(event, context):
    obj = s3.get_object(
        Bucket='blabla',
        Key='blabla',
    )
    return {
        'statusCode': 200,
        'body': obj.body.read(),
    }

[sriram9707]

@kapilt Hey Kapil, i get the below error wheni try to execute the script.

'Session' object has no attribute 'register'