Merge "Use a random keepalived router id in CI environment" into stable/pike

tests/templates/globals-default.j2

@@ -2,6 +2,10 @@
 kolla_base_distro: "{{ base_distro }}"
 kolla_install_type: "{{ install_type }}"
 
+# Use a random router id, otherwise it may result in the same router id
+# in the CI gate.
+keepalived_virtual_router_id: "{{ 250 | random(1) }}"
+
 {% if hostvars|length > 2 %}
 enable_haproxy: "no"
 kolla_internal_vip_address: "{{ api_interface_address }}"