Disable SDNC clustering for deploy tests

SDNC clustering currently doesn't work; disable
for now.

Change-Id: I5971e5068895912aed57aba0d1fde62b148ea3a7
Issue-ID: INT-586
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
diff --git a/deployment/heat/onap-oom/env/tlab/onap-oom.env b/deployment/heat/onap-oom/env/tlab/onap-oom.env
index 2440473..aae5f12 100644
--- a/deployment/heat/onap-oom/env/tlab/onap-oom.env
+++ b/deployment/heat/onap-oom/env/tlab/onap-oom.env
@@ -44,6 +44,6 @@
       config:
         enableClustering: false
     sdnc:
-      replicaCount: 3
+      replicaCount: 1
       config:
-        enableClustering: true
+        enableClustering: false