Sync docker tags with release manifest

Sync docker tags with the release manifest from integration
repo commit db8a0273b6d9110ba7d1aa01b84666dab83b89d9.

Change-Id: I94878829add2033b98b82a06e4bb097b72648faa
Issue-ID: INT-663
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
diff --git a/kubernetes/so/charts/so-monitoring/values.yaml b/kubernetes/so/charts/so-monitoring/values.yaml
index 53d6345..6e3578b 100644
--- a/kubernetes/so/charts/so-monitoring/values.yaml
+++ b/kubernetes/so/charts/so-monitoring/values.yaml
@@ -32,7 +32,7 @@
 # Application configuration defaults.
 #################################################################
 repository: nexus3.onap.org:10001
-image: onap/so/so-monitoring:latest
+image: onap/so/so-monitoring:1.3.1
 pullPolicy: Always
 
 replicaCount: 1