[SDC-236] [DevOps] - Changed version of jetty

image in fe and be dockerfiles

Change-Id: If7fb71e6add800da620909980a0d5c699e907520
Signed-off-by: Idan Amit <ia096e@intl.att.com>
diff --git a/sdc-os-chef/sdc-frontend/Dockerfile b/sdc-os-chef/sdc-frontend/Dockerfile
index 17034ef..c59d9e2 100644
--- a/sdc-os-chef/sdc-frontend/Dockerfile
+++ b/sdc-os-chef/sdc-frontend/Dockerfile
@@ -1,4 +1,4 @@
-FROM jetty:9.3.15-jre8
+FROM jetty:9.3-jre8
 
 ARG HTTP_PROXY
 ARG HTTPS_PROXY