fix risky-shell-pipe

roles/virtualization/tasks/libvirt.yml

@@ -12,7 +12,7 @@
 
 - name: Generate Random MAC Address
   delegate_to: localhost
-  ansible.builtin.shell: openssl rand -hex 5 | sed 's/\(..\)/\1:/g; s/.$//' | sed 's/^/02:/'
+  ansible.builtin.shell: set -o pipefail && openssl rand -hex 5 | sed 's/\(..\)/\1:/g; s/.$//' | sed 's/^/02:/'
   changed_when: false
   register: mac_address_output