Add prometheus, alertmanager, pushgateway configs

Change-Id: I7f146e0207ada58f0723b14d0a625a6bce67ea9f
diff --git a/tests/pillar/prometheus_alertmanager.sls b/tests/pillar/prometheus_alertmanager.sls
new file mode 100644
index 0000000..48a9d5d
--- /dev/null
+++ b/tests/pillar/prometheus_alertmanager.sls
@@ -0,0 +1,36 @@
+prometheus:
+  alertmanager:
+    enabled: true
+    bind:
+      address: 0.0.0.0
+      port: 9093
+    config:
+      global:
+        resolve_timeout: 5m
+      route:
+        group_by: ['alertname', 'region', 'service']
+        group_wait: 60s
+        group_interval: 5m
+        repeat_interval: 3h
+        receiver: HTTP-notification
+      inhibit_rules:
+        - source_match:
+            severity: 'down'
+          target_match:
+            severity: 'critical'
+          equal: ['region', 'service']
+        - source_match:
+            severity: 'down'
+          target_match:
+            severity: 'warning'
+          equal: ['region', 'service']
+        - source_match:
+            severity: 'critical'
+          target_match:
+            severity: 'warning'
+          equal: ['alertname', 'region', 'service']
+      receivers:
+        - name: 'HTTP-notification'
+          webhook_configs:
+            - url: http://127.0.0.1
+              send_resolved: true