Update MSB docker images

Update consul version to 1.4.3
Update discovery version to 1.2.3
Update api gateway version to 1.2.4

Issue-ID: MSB-325, MSB-326
Change-Id: I51bdbf783cb7a095f32f26cf738f959655ec44f3
Signed-off-by: Huabing Zhao <zhaohuabing@gmail.com>
diff --git a/kubernetes/msb/charts/msb-consul/values.yaml b/kubernetes/msb/charts/msb-consul/values.yaml
index 79a2640..3cb5c74 100644
--- a/kubernetes/msb/charts/msb-consul/values.yaml
+++ b/kubernetes/msb/charts/msb-consul/values.yaml
@@ -22,7 +22,7 @@
 #################################################################
 # application image
 dockerHubRepository: registry.hub.docker.com
-image: library/consul:0.9.3
+image: library/consul:1.4.3
 pullPolicy: Always
 istioSidecar: true
 
@@ -76,4 +76,4 @@
     requests:
       cpu: 20m
       memory: 100Mi
-  unlimited: {}
\ No newline at end of file
+  unlimited: {}