tests: refresh to latest libvirt-ci module

Notable changes:

  - libvirt-ci source tree was re-arranged, so the script we
    run now lives in a bin/ sub-dir

  - opensuse 15.2 is replaced by opensuse 15.3

  - libslirp is temporarily dropped on opensuse as the
    libslirp-version.h is broken

     https://bugzilla.opensuse.org/show_bug.cgi?id=1201551

  - The incorrectly named python3-virtualenv module was
    changed to python3-venv, but most distros don't need
    any package as 'venv' is a standard part of python

  - glibc-static was renamed to libc-static, to reflect
    fact that it isn't going to be glibc on all distros

  - The cmocka/json-c deps that were manually added to
    the centos dockerfile and are now consistently added
    to all targets

Acked-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20220722130431.2319019-2-berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220725140520.515340-2-alex.bennee@linaro.org>

tests/docker/dockerfiles/centos8.docker

@@ -6,11 +6,12 @@
 
 FROM quay.io/centos/centos:stream8
 
-RUN dnf update -y && \
+RUN dnf distro-sync -y && \
     dnf install 'dnf-command(config-manager)' -y && \
     dnf config-manager --set-enabled -y powertools && \
     dnf install -y centos-release-advanced-virtualization && \
     dnf install -y epel-release && \
+    dnf install -y epel-next-release && \
     dnf install -y \
         SDL2-devel \
         alsa-lib-devel \
@@ -45,6 +46,7 @@ RUN dnf update -y && \
         gtk3-devel \
         hostname \
         jemalloc-devel \
+        json-c-devel \
         libaio-devel \
         libasan \
         libattr-devel \
@@ -60,7 +62,6 @@ RUN dnf update -y && \
         libgcrypt-devel \
         libiscsi-devel \
         libjpeg-devel \
-        json-c-devel \
         libnfs-devel \
         libpmem-devel \
         libpng-devel \
@@ -99,7 +100,6 @@ RUN dnf update -y && \
         python3-pip \
         python3-sphinx \
         python3-sphinx_rtd_theme \
-        python3-virtualenv \
         rdma-core-devel \
         rpm \
         sed \