docker: install more packages on CentOS to extend code coverage

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20170728233316.13352-4-f4bug@amsat.org>
Signed-off-by: Fam Zheng <famz@redhat.com>

tests/docker/dockerfiles/centos6.docker

@@ -2,17 +2,27 @@ FROM centos:6
 RUN yum install -y epel-release centos-release-xen
 ENV PACKAGES \
     bison \
+    bzip2-devel \
     ccache \
+    csnappy-devel \
     flex \
     g++ \
     gcc \
     git \
     glib2-devel \
+    libepoxy-devel \
     libfdt-devel \
+    librdmacm-devel \
+    lzo-devel \
     make \
+    mesa-libEGL-devel \
+    mesa-libgbm-devel \
     pixman-devel \
     SDL-devel \
+    spice-glib-devel \
+    spice-server-devel \
     tar \
+    vte-devel \
     xen-devel \
     zlib-devel
 RUN yum install -y $PACKAGES