It's a variation of our existing centos6, plus two more lines to
downgrade glib2 to version 2.22 which we download from vault.centos.org.
Suggested-by: Paolo Bonzini <pbonzoni@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1470708908-12885-1-git-send-email-famz@redhat.com>
