Release MSB discovery 1.2.6 docker

Issue-ID: MSB-456
Signed-off-by: Huabing Zhao <zhao.huabing@zte.com.cn>
Change-Id: I0c2df32ead7254d0b243d5120afed66e78785045
diff --git a/kubernetes/msb/charts/msb-eag/values.yaml b/kubernetes/msb/charts/msb-eag/values.yaml
index 535c135..c5820ae 100644
--- a/kubernetes/msb/charts/msb-eag/values.yaml
+++ b/kubernetes/msb/charts/msb-eag/values.yaml
@@ -24,7 +24,7 @@
 #################################################################
 # application image
 repository: nexus3.onap.org:10001
-image: onap/msb/msb_apigateway:1.2.5
+image: onap/msb/msb_apigateway:1.2.6
 pullPolicy: Always
 istioSidecar: true