tests/docker: Add genisoimage to the docker file

genisoimage is needed for running the tests/qtest/cdrom-test qtest.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20201006174347.152040-1-thuth@redhat.com>
Message-Id: <20201007160038.26953-7-alex.bennee@linaro.org>

tests/docker/dockerfiles/centos8.docker

@@ -8,6 +8,7 @@ ENV PACKAGES \
     dbus-daemon \
     gcc \
     gcc-c++ \
+    genisoimage \
     gettext \
     git \
     glib2-devel \

tests/docker/dockerfiles/debian-amd64.docker

@@ -14,6 +14,7 @@ RUN apt update && \
 RUN apt update && \
     DEBIAN_FRONTEND=noninteractive eatmydata \
     apt install -y --no-install-recommends \
+        genisoimage \
         libbz2-dev \
         liblzo2-dev \
         libgcrypt20-dev \

tests/docker/dockerfiles/fedora.docker

@@ -15,6 +15,7 @@ ENV PACKAGES \
     findutils \
     gcc \
     gcc-c++ \
+    genisoimage \
     gettext \
     git \
     glib2-devel \

tests/docker/dockerfiles/ubuntu2004.docker

@@ -3,6 +3,7 @@ ENV PACKAGES flex bison \
     ccache \
     clang-10\
     gcc \
+    genisoimage \
     gettext \
     git \
     glusterfs-common \