bug: Upstream Quickstart CFT Inaccessible

[mbeacom]

It appears the CFT used to stamp out the NR stackset is (similarly to the rest of the experience so far) not usable either since it's inaccessible.

create: failed to create CloudFormation stack, rollback requested (ROLLBACK_COMPLETE): ["The following resource(s) failed to create: [NewRelicControlTowerEvents, NewRelicFirstLaunch]. Rollback requested by user." "Resource creation cancelled" "Received response status [FAILED] from custom resource. Message returned: An error occurred (ValidationError) when calling the CreateStackSet operation: Object referenced by https://aws-quickstart.s3.amazonaws.com/quickstart-ct-newrelic-one/templates/newrelic-stack-set.yml is not accessible.

[netcrazed]

A potential workaround has been identified which is to create the StackSet manually using the URL mentioned in the error message. The name of the StackSet with the manual deploy must be the same as the value as the StackSetName parameter name. This stack set has a few other parameters which do not have defaults which their values can be pulled from the quickstart.