openstack-crowbar: Add pci passthough option

Add Jenkins parameter 'want_pci_passthrough' to allow running tests to validate
pci passthough.

To test pci passthrough locally with mkcloud, simply just export
'want_pci_passthrouh=1' and append 'rebootcloud testpcipassthru' to 'plain'
step, e.g. your_mkcloud.sh plain rebootcloud testpcipassthru

The rebootcloud step will ensure intel_iommu=on kernel param enabled.

The testpcipassthru step will prepare the environment and spin up a nested vm
(L2) on compute (L1) with a virtio disk passing from compute vm (L1). Noted
that this is not passing any device from the host (L0) itself.

There will be another PR to construct job definition and other prep works for
new ci.

1. add environment prep and verify function in qa_crowbarsetup.sh
2. create legacy ci job template
3. introduce testpcipassthru step in mkcloud

jenkins/ci.suse.de/templates/cloud-mkcloud-job-pcipassthru-template.yml

@@ -0,0 +1,28 @@
+- job-template:
+    name: 'cloud-mkcloud{version}-job-pcipassthru-{arch}'
+    node: cloud-trigger
+    disabled: '{obj:disabled}'
+
+    triggers:
+      - timed: 'H 20 * * *'
+
+    logrotate:
+      numToKeep: -1
+      daysToKeep: 7
+
+    builders:
+      - trigger-builds:
+        - project: openstack-mkcloud
+          condition: SUCCESS
+          block: true
+          current-parameters: true
+          predefined-parameters: |
+            TESTHEAD=1
+            cloudsource=develcloud{version}
+            libvirt_type=kvm
+            nodenumber=2
+            mkcloudtarget=all testpcipassthru
+            label={label}
+            custom_settings='export want_pci_passthrough=1'
+            job_name=cloud-mkcloud{version}-job-pcipassthru-{arch}
+

scripts/mkcloud

@@ -1026,6 +1026,14 @@ function rebootcrowbar
     return $?
 }
 
+# Need to run rebootcloud step to enable iommu (e.g., plain rebootcloud
+# testpcipassthru)
+function testpcipassthru
+{
+    onadmin verify_pci_passthru
+    return $?
+}
+
 function rebootcloud
 {
     # reboot compute nodes
@@ -1452,6 +1460,8 @@ Optional
         If set, does not use the --insecure flag in openstack CLI commands.
     want_monasca_tsdb (Cloud9+ only)
         Allows setting time-series DB used for Monasca [influxdb|cassandra].
+    want_pci_passthrough (default=0)
+        Deploy node with an extra disk to test pci passthrough. Cloud9+ only.
     want_ipv6 (Currently in development)
         Prepare crowbar to use a full IPv6 single stack control plane. Enabling will also set
         the firmware_type to UEFI as it's required to netboot nodes over IPv6.
@@ -1616,7 +1626,7 @@ allcmds="$step_aliases _test_setuphost \
     lonelynode_nfs_server setupironicnodes\
     restoreadminfromsnapshot createcloudsnapshot restorecloudfromsnapshot \
     cct steps batch setup_aliases onadmin onhost devsetup plain_with_upgrade_test \
-    testpreupgrade testpostupgrade deployexternalceph"
+    testpreupgrade testpostupgrade deployexternalceph testpcipassthru"
 wantedcmds=$@
 
 function expand_steps