Upgrade packages for security

Change-Id: Ib4226cdcf5b8ede41d0ddaa2eea7de54bce23e06
Partial-Bug: #1683173

centos/Dockerfile

@@ -10,8 +10,8 @@ ADD $OVERRIDE /
 
 RUN set -x \
     # NOTE(Pete Birley): libffi-devel does not like being uninstalled on CentOS so we install it seperatly, all of its dependencies are already installed in the docker base image.
-    && yum install -y \
-        libffi-devel \
+    && yum upgrade -y \
+    && yum install -y libffi-devel \
     && yum install -y  \
         gcc \
         gcc-c++ \

debian/Dockerfile

@@ -10,6 +10,7 @@ ADD $OVERRIDE /
 
 RUN set -x \
     && apt-get update \
+    && apt-get dist-upgrade -y \
     && apt-get install -y --no-install-recommends \
         build-essential \
         ca-certificates \

ubuntu/Dockerfile

@@ -10,6 +10,7 @@ ADD $OVERRIDE /
 
 RUN set -x \
     && apt-get update \
+    && apt-get dist-upgrade -y \
     && apt-get install -y --no-install-recommends \
         build-essential \
         ca-certificates \