Merge "Add --no-install-recommends option to Ubuntu image"

docker/ubuntu/binary/base/Dockerfile

@@ -2,12 +2,12 @@ FROM ubuntu:trusty
 MAINTAINER Kolla Project (https://launchpad.net/kolla)
 
 RUN apt-get update \
-    && apt-get install -y software-properties-common \
+    && apt-get install -y --no-install-recommends software-properties-common \
     && add-apt-repository cloud-archive:kilo \
     && apt-get update \
     && apt-get upgrade -y \
     && apt-get dist-upgrade -y \
-    && apt-get install -y \
+    && apt-get install -y --no-install-recommends \
         crudini \
         openssl \
     && apt-get clean