fix(sqs): fix sqs message age and min incoming dedupe (#540)

Our team has a variety of SQS alarms including tiered alarm on message
ages and tiered alarms based on how long we haven't seen messages in.

However, these are not currently deduping as expected which we root
caused to the `alarmDedupeStringSuffix` being missing on these alarms.

The message age issue is reported in #255.

This PR fixes both #255 and the unreported minute incoming messages
issue by adding `alarmDedupeStringSuffix` for them.

Fixes #255

---

_By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache-2.0 license_

lib/common/monitoring/alarms/QueueAlarmFactory.ts

@@ -98,6 +98,8 @@ export class QueueAlarmFactory {
       threshold: props.maxAgeInSeconds,
       alarmNameSuffix: "Queue-Message-Age-Max",
       alarmDescription: `Age of the oldest message in the queue is too high.`,
+      // we will dedupe any kind of message age issue to the same ticket
+      alarmDedupeStringSuffix: "AnyQueueMessageAge",
     });
   }
 
@@ -136,6 +138,8 @@ export class QueueAlarmFactory {
       threshold: props.minIncomingMessagesCount,
       alarmNameSuffix: "Queue-Incoming-Messages-Count-Min",
       alarmDescription: `Number of incoming messages into the queue is too low.`,
+      // we will dedupe any kind of min message issues to the same ticket
+      alarmDedupeStringSuffix: "AnyQueueMinIncomingMessages",
     });
   }