Fails when queue name is intrinsic function

[cw43]

Using ImportValue for queue name as following:

sqs-alarms:

- thresholds: [1, 10, 50, 100]
  queue: { 'Fn::ImportValue': "create-events:MyQueueName" }
  topic: "AlarmsTopicName"

Fails with the following error: this.queue.replace is not a function

[nolde]

I've made a fork that fixes this issue, @cw43.

https://github.com/digitalmaas/serverless-plugin-sqs-alarms