Add recording rules for the instance status metrics

Change-Id: I4270f3c1339e50611387959fb1f7ea5a541636da
Related-PROD: PROD-27908
(cherry picked from commit ad5fb8130362f6c699f976748f7c3a04036f958c)
diff --git a/nova/meta/prometheus.yml b/nova/meta/prometheus.yml
index f3e12ee..c94e0e8 100644
--- a/nova/meta/prometheus.yml
+++ b/nova/meta/prometheus.yml
@@ -27,6 +27,13 @@
 {%- endif %}
 
 server:
+  recording:
+    total:openstack_nova_instance_status:
+      query: >-
+        count(openstack_nova_instance_status) without (id,name)
+    total:openstack_nova_instance_status:error:
+      query: >-
+        count(openstack_nova_instance_status == 2) without (id,name)
   alert:
 {%- if is_controller %}
 {% raw %}