Fix up runbook URL, use var for New Relic entities

Author: obscurerichard

terraform/newrelic.tf

@@ -18,9 +18,9 @@ resource "newrelic_alert_condition" "spin-appdex" {
 
   name        = "spin-appdex"
   type        = "apm_app_metric"
-  entities    = ["179953338"]                                       # You can look this up in New Relic
+  entities    = "${var.newrelic_apm_entities}"
   metric      = "apdex"
-  runbook_url = "https://github.com/devops-infra-demo/wiki/runbook"
+  runbook_url = "${var.newrelic_runbook_url}"
 
   term {
     duration      = 5

terraform/variables.tf

@@ -96,6 +96,11 @@ variable "newrelic_apm_entities" {
   default     = []
 }
 
+variable "newrelic_runbook_url" {
+  description = "New Relic runbook URL"
+  default = "https://github.com/ModusCreateOrg/devops-infra-demo/wiki/runbook"
+}
+
 variable "newrelic_alert_email" {
   description = "New Relic alert email"
   default     = ""