Add monitor messages (DataDog#18418)

aws_neuron/assets/monitors/execution_errors.json

@@ -8,7 +8,7 @@
 		"name": "High amount of execution errors on {{instance_id.name}}",
 		"type": "query alert",
 		"query": "sum(last_5m):sum:aws_neuron.execution.errors.count{*} by {instance_id}.as_count() > 10",
-		"message": "",
+		"message": "{{#is_alert}}{{instance_id.name}} has experienced {{value}} execution errors over the last 5 minutes.{{/is_alert}}\n{{#is_recovery}}The number of execution errors on {{instance_id.name}} is back below the threshold of {{threshold}}.{{/is_recovery}}",
 		"tags": [
 			"integration:aws_neuron"
 		],

aws_neuron/assets/monitors/execution_latency.json

@@ -8,7 +8,7 @@
 		"name": "Latency is high on {{instance_id.name}} ",
 		"type": "query alert",
 		"query": "avg(last_5m):avg:aws_neuron.execution.latency_seconds{*} by {instance_id} > 2",
-		"message": "",
+		"message": "{{#is_alert}}The average execution latency on {{instance_id.name}} has been {{value}} over the past 5 minutes.{{/is_alert}}\n{{#is_recovery}}The execution latency of {{instance_id.name}} has recovered below the threshold of {{threshold}}.{{/is_recovery}}",
 		"tags": [
 			"integration:aws_neuron"
 		],

aws_neuron/assets/monitors/neuron_runtime_vcpu.json

@@ -8,7 +8,7 @@
 		"name": "The Neuron Runtime has high vCPU usage on {{instance_id.name}}",
 		"type": "query alert",
 		"query": "avg(last_5m):avg:aws_neuron.neuron_runtime.vcpu_usage_ratio{*} by {instance_id} > 0.8",
-		"message": "",
+		"message": "{{#is_alert}}The average vCPU usage on {{instance_id.name}} has been {{value}} over the past 5 minutes.{{/is_alert}}\n{{#is_recovery}}The average vCPU usage of {{instance_id.name}} has recovered below the threshold of {{threshold}}.{{/is_recovery}}",
 		"tags": [
 			"integration:aws_neuron"
 		],