add loadtesting to manifest so we can deploy a separate app

manifest.yml.j2

@@ -25,6 +25,23 @@
     },
   },
 
+  'notify-api-loadtesting': {
+    'comments': 'DELETE ME LATER',
+    'NOTIFY_APP_NAME': 'api',
+    'disk_quota': '2G',
+    'sqlalchemy_pool_size': 30,
+    'routes': {
+      'staging': [],
+    },
+    'health-check-type': 'port',
+    'health-check-invocation-timeout': 3,
+    'instances': {
+      'preview': None,
+      'staging': 4,
+      'production': None
+    },
+  },
+
   'notify-delivery-celery-beat': {'memory': '128M'},
   'notify-delivery-worker-jobs': {},
   'notify-delivery-worker-research': {},
@@ -70,7 +87,7 @@ applications:
     services:
       - notify-db
       - logit-ssl-syslog-drain
-      {% if CF_APP == 'notify-api' %}
+      {% if CF_APP in ('notify-api', 'notify-api-loadtesting') %}
       - notify-prometheus
       {% endif %}