fix travis failure

e2e-test/generator-alfresco-docker-compose/generators/app/templates/images/alfresco/Dockerfile

@@ -30,7 +30,6 @@ ENV SHARE_SERVICES_TAG $SHARE_SERVICES_TAG
 
 # From Alfresco Repository 7.0.0 Share Services AMP is not provided with default Docker Image
 RUN if [ ! -z "$SHARE_SERVICES_TAG" ] ; then \
-    yum -y update && \
     yum -y install wget && \
     yum clean all && \
     mkdir -p $TOMCAT_DIR/amps && \

search-services/packaging/src/docker/Dockerfile

@@ -27,7 +27,6 @@ RUN set -x \
         -u "${USERID}" \
         -o \
         "${USERNAME}" \
-   && yum update -y \
    && yum install -y unzip \
    && yum install -y lsof ca-certificates \
    && yum install -y wget \