EventBridge event rule and target - don't attempt to delete managed rules

[mdgm88]

aws-nuke should not attempt to directly delete CloudWatchEventsRule and CloudWatchEventsTarget resources if the CloudWatchEventsRule is of type Managed. To remove Managed Rules you should instead remove the associated resources for other AWS Services.

[mdgm88]

It seems that aws-nuke is set to force deletion, but even then it still fails to delete at least some managed rules.

[mdgm88]

us-east-1 - CloudWatchEventsRule - Rule: AutoScalingManagedRule - [ARN: "arn:aws:events:us-east-1:012345678901:rule/AutoScalingManagedRule", EventBusName: "default", Name: "AutoScalingManagedRule", State: "ENABLED"] - failed

[mdgm88]

Oh, it deleted on a subsequent run of aws-nuke as the associated resources had been deleted, but still it would be nice to have the option to not delete managed rules.

[ekristen]

@mdgm88 you can always write a filter to exclude anything with ManagedRule in it.