fix issu in marge job

Change-Id: I01a44de83d5d1c33deb92c04a43bd3cad2ec0c5b
Issue-ID: SDC-1222
Signed-off-by: Michael Lando <ml636r@att.com>
diff --git a/base_sdc-elasticsearch/Dockerfile b/base_sdc-elasticsearch/Dockerfile
index e2f1e86..744e62d 100644
--- a/base_sdc-elasticsearch/Dockerfile
+++ b/base_sdc-elasticsearch/Dockerfile
@@ -19,4 +19,4 @@
 # Install Chef
 RUN set -ex && \
     apk add --no-cache bash build-base ruby ruby-dev libffi-dev libxml2-dev && \
-    gem install chef berkshelf io-console --no-document
+    gem install chef:13.8.5 berkshelf io-console --no-document