CI: Fix Bifrost log collection

Bifrost changed to use a combined Ironic service instead of separate API
and conductor services in the Yoga release [1]. Update copy_bifrost_logs
to get logs from the combined service instead.

Also remove log collection for RabbitMQ which was disabled in Train [2].

[1] https://review.opendev.org/c/openstack/bifrost/+/820390
[2] https://review.opendev.org/c/openstack/bifrost/+/645093

Change-Id: I41ccedbd98b0088b92d3eb8671955423815d599f

Author: priteau

roles/kayobe-diagnostics/files/get_logs.sh

@@ -25,7 +25,7 @@ copy_container_engine_logs() {
 
 copy_bifrost_logs() {
     container_engine=$1
-    for service in dnsmasq ironic-api ironic-conductor ironic-inspector mariadb nginx rabbitmq-server; do
+    for service in dnsmasq ironic ironic-inspector mariadb nginx; do
         mkdir -p ${LOG_DIR}/kolla/$service
         $container_engine exec bifrost_deploy \
             systemctl status $service -l -n 10000 > ${LOG_DIR}/kolla/$service/${service}-systemd-status.txt