Add prometheus, alertmanager, pushgateway configs

Change-Id: I7f146e0207ada58f0723b14d0a625a6bce67ea9f
diff --git a/tests/pillar/prometheus_server.sls b/tests/pillar/prometheus_server.sls
new file mode 100644
index 0000000..c967b8f
--- /dev/null
+++ b/tests/pillar/prometheus_server.sls
@@ -0,0 +1,30 @@
+prometheus:
+  server:
+    enabled: true
+    bind:
+      port: 9090
+      address: 0.0.0.0
+    storage:
+      local:
+        engine: "persisted"
+        retention: "360h"
+        memory_chunks: 1048576
+        max_chunks_to_persist: 524288
+        num_fingerprint_mutexes: 4096
+    alertmanager:
+      notification_queue_capacity: 10000
+    config:
+      global:
+        scrape_interval: "15s"
+        scrape_timeout: "15s"
+        evaluation_interval: "1m"
+        external_labels:
+          region: 'region1'
+    alert:
+      PrometheusTargetDownKubernetesNodes:
+        if: 'up{job="kubernetes-nodes"} != 1'
+        labels:
+          severity: down
+          service: prometheus
+        annotations:
+          summary: 'Prometheus target down'