tests/docker: Keep package list sorted

Keep package list sorted, this eases rebase/cherry-pick.

Fixes: 3a6784813
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200322120104.21267-2-philmd@redhat.com>
Message-Id: <20200323161514.23952-8-alex.bennee@linaro.org>

tests/docker/dockerfiles/centos7.docker

@@ -2,6 +2,8 @@ FROM centos:7
 RUN yum install -y epel-release centos-release-xen-48
 
 RUN yum -y update
+
+# Please keep this list sorted alphabetically
 ENV PACKAGES \
     bison \
     bzip2 \
@@ -19,6 +21,7 @@ ENV PACKAGES \
     libepoxy-devel \
     libfdt-devel \
     librdmacm-devel \
+    libzstd-devel \
     lzo-devel \
     make \
     mesa-libEGL-devel \
@@ -33,7 +36,6 @@ ENV PACKAGES \
     tar \
     vte-devel \
     xen-devel \
-    zlib-devel \
-    libzstd-devel
+    zlib-devel
 RUN yum install -y $PACKAGES
 RUN rpm -q $PACKAGES | sort > /packages.txt

tests/docker/dockerfiles/fedora.docker

@@ -1,4 +1,6 @@
 FROM fedora:30
+
+# Please keep this list sorted alphabetically
 ENV PACKAGES \
     bc \
     bison \
@@ -38,6 +40,7 @@ ENV PACKAGES \
     libubsan \
     libusbx-devel \
     libxml2-devel \
+    libzstd-devel \
     llvm \
     lzo-devel \
     make \
@@ -92,8 +95,7 @@ ENV PACKAGES \
     vte291-devel \
     which \
     xen-devel \
-    zlib-devel \
-    libzstd-devel
+    zlib-devel
 ENV QEMU_CONFIGURE_OPTS --python=/usr/bin/python3
 
 RUN dnf install -y $PACKAGES