Add python-lxml to docker images (#25324)

test/utils/docker/centos6/Dockerfile

@@ -21,6 +21,7 @@ RUN yum clean all && \
     python-httplib2 \
     python-jinja2 \
     python-keyczar \
+    python-lxml \
     python-mock \
     python-nose \
     python-paramiko \

test/utils/docker/centos7/Dockerfile

@@ -29,6 +29,7 @@ RUN yum clean all && \
     python-httplib2 \
     python-jinja2 \
     python-keyczar \
+    python-lxml \
     python-mock \
     python-nose \
     python-paramiko \

test/utils/docker/cloudstack-simulator/Dockerfile

@@ -15,9 +15,10 @@ RUN apt-get -y update && apt-get install -y \
     netcat \
     openjdk-8-jdk \
     python-dev \
-    python-setuptools \
-    python-pip \
+    python-lxml \
     python-mysql.connector \
+    python-pip \
+    python-setuptools \
     supervisor \
     wget \
     nginx \

test/utils/docker/fedora24/Dockerfile

@@ -36,6 +36,7 @@ RUN dnf clean all && \
     python-httplib2 \
     python-jinja2 \
     python-keyczar \
+    python-lxml \
     python-mock \
     python-nose \
     python-paramiko \

test/utils/docker/fedora25/Dockerfile

@@ -32,6 +32,7 @@ RUN dnf clean all && \
     python-httplib2 \
     python-jinja2 \
     python-keyczar \
+    python-lxml \
     python-mock \
     python-nose \
     python-paramiko \

test/utils/docker/opensuse42.1/Dockerfile

@@ -24,6 +24,7 @@ RUN zypper --non-interactive --gpg-auto-import-keys refresh && \
     python-httplib2 \
     python-jinja2 \
     python-keyczar \
+    python-lxml \
     python-mock \
     python-MySQL-python \
     python-nose \

test/utils/docker/opensuse42.2/Dockerfile

@@ -24,6 +24,7 @@ RUN zypper --non-interactive --gpg-auto-import-keys refresh && \
     python-httplib2 \
     python-jinja2 \
     python-keyczar \
+    python-lxml \
     python-mock \
     python-MySQL-python \
     python-nose \

test/utils/docker/ubuntu1204/Dockerfile

@@ -29,6 +29,7 @@ RUN apt-get update -y && \
     python-httplib2 \
     python-jinja2 \
     python-keyczar \
+    python-lxml \
     python-mock \
     python-mysqldb \
     python-nose \

test/utils/docker/ubuntu1404/Dockerfile

@@ -27,6 +27,7 @@ RUN apt-get update -y && \
     python-httplib2 \
     python-jinja2 \
     python-keyczar \
+    python-lxml \
     python-mock \
     python-mysqldb \
     python-nose \

test/utils/docker/ubuntu1604/Dockerfile

@@ -30,6 +30,7 @@ RUN apt-get update -y && \
     python-httplib2 \
     python-jinja2 \
     python-keyczar \
+    python-lxml \
     python-mock \
     python-mysqldb \
     python-nose \

test/utils/docker/ubuntu1604py3/Dockerfile

@@ -26,6 +26,7 @@ RUN apt-get update -y && \
     python3-dbus \
     python3-httplib2 \
     python3-jinja2 \
+    python3-lxml \
     python3-mock \
     python3-mysqldb \
     python3-nose \