Migrate IPE job to focal

Depends-On: https://review.opendev.org/#/c/739448/

Change-Id: Ic99e20222f8af694ffe4ddd88bdaa150faa32f30

.zuul.yaml

@@ -2,7 +2,7 @@
     name: ironic-prometheus-exporter-redfish
     description: Job that installs the exporter with redfish driver.
     parent: devstack
-    nodeset: openstack-single-node-bionic
+    nodeset: openstack-single-node-focal
     timeout: 5400
     required-projects:
       - openstack/ironic
@@ -45,7 +45,7 @@
         IRONIC_VM_LOG_DIR: '{{ devstack_base_dir }}/ironic-bm-logs'
         IRONIC_VM_SPECS_RAM: 512
         IRONIC_VM_SPECS_DISK: 4
-        IRONIC_DEFAULT_DEPLOY_INTERFACE: iscsi
+        IRONIC_DEFAULT_DEPLOY_INTERFACE: direct 
         Q_AGENT: openvswitch
         Q_ML2_TENANT_NETWORK_TYPE: vxlan
         SERVICE_TIMEOUT: 90
@@ -58,6 +58,7 @@
         '{{ devstack_base_dir }}/ironic-bm-logs': 'logs'
         '{{ devstack_base_dir }}/ironic-bm-logs/ipe': 'logs'
       devstack_services:
+        dstat: false
         q-agt: true
         q-dhcp: true
         q-l3: true

devstack/plugin.sh

@@ -28,7 +28,7 @@ function configure_ironic_prometheus_exporter {
 
     local gunicorn_ipe_cmd
 
-    gunicorn_ipe_cmd=$(which gunicorn3)
+    gunicorn_ipe_cmd=$(which gunicorn)
     gunicorn_ipe_cmd+=" -b ${HOST_IP}:${IRONIC_PROMETHEUS_EXPORTER_PORT}"
     gunicorn_ipe_cmd+=" --env IRONIC_CONFIG=$IRONIC_CONFIG"
     gunicorn_ipe_cmd+=" --env FLASK_DEBUG=1 -w 4"