tests/docker: expand centos8 package list

tests/docker: expand centos8 package list

This is the fully expanded list of build pre-requisites QEMU can
conceivably use in any scenario.

[AJB: added centos-release-advanced-virtualization/epel-release]

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210623142245.307776-12-berrange@redhat.com>
Message-Id: <20210709143005.1554-20-alex.bennee@linaro.org>