Handle the hardcoded configuration values

This patch allows to customize the hardcoded configuration values,
as well as introduce new configuration options for heat services
by configmap template

Change-Id: I93056ddf64c737abfcc40151105af129f8b2c2d6
Related-Prod: PROD-29040
diff --git a/tests/pillar/server_cluster.sls b/tests/pillar/server_cluster.sls
index d9d675f..946bc3b 100644
--- a/tests/pillar/server_cluster.sls
+++ b/tests/pillar/server_cluster.sls
@@ -86,3 +86,14 @@
         enabled: true
         strategy: ENCRYPT
         secret_key: secret
+    configmap:
+      DEFAULT:
+        debug: true
+      database:
+        idle_timeout: 300
+        min_pool_size: 5
+        max_pool_size: 50
+      oslo_messaging_rabbit:
+        pool_max_size: 30
+        pool_max_overflow: 30
+        pool_recycle: 600