Update backuprestore.cfg to fix bus and target device parameter

[misanjumn]

Update backuprestore.cfg to fix bus and target device parameter

• The virsh.snapshot_create_as.negative_tests.network_disk.iscsi.device_lun requires bus as "scsi" and target as "sdb"
• The default bus "virtio" (virtio-blk) and default disk "sda" are leading to error since virtio-blk is not support for iscsi emulation and default disk sda is leading to duplicacy.
• Hence, adding the parameters seperately only for this particular scenario is required

            - snapshot_create_as.negative_tests.network_disk.iscsi.device_lun:
                disk_target_bus = "scsi"
                disk_target = "sdb"
                only virsh.snapshot_create_as.negative_tests.network_disk.iscsi.device_lun

Signed-off-by: Misbah Anjum N [email protected]

[misanjumn]

Before patch:

Status: ERROR

 (1/1) type_specific.io-github-autotest-libvirt.virsh.snapshot_create_as.negative_tests.network_disk.iscsi.device_lun: STARTED
 (1/1) type_specific.io-github-autotest-libvirt.virsh.snapshot_create_as.negative_tests.network_disk.iscsi.device_lun:  ERROR: Failed to define virt-tests-vm1 for reason:\nerror: Failed to define domain from /var/tmp/xml_utils_temp_qjyxl1zw.xml\nerror: unsupported configuration: This QEMU doesn't support SCSI emulation with 'virtio-blk' device\n (16.60 s)
RESULTS    : PASS 0 | ERROR 1 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | CANCEL 0

 (1/1) type_specific.io-github-autotest-libvirt.virsh.snapshot_create_as.negative_tests.network_disk.iscsi.device_lun: STARTED
 (1/1) type_specific.io-github-autotest-libvirt.virsh.snapshot_create_as.negative_tests.network_disk.iscsi.device_lun:  ERROR: Failed to define virt-tests-vm1 for reason:\nerror: Failed to define domain from /var/tmp/xml_utils_temp_jxfbr6s6.xml\nerror: unsupported configuration: Found duplicate drive address for disk with target name 'sda' controller='0' bus='0' target='0' unit='0'... (17.04 s)
RESULTS    : PASS 0 | ERROR 1 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | CANCEL 0

After patch:

Status: PASS

 (1/1) type_specific.io-github-autotest-libvirt.virsh.snapshot_create_as.negative_tests.network_disk.iscsi.device_lun: STARTED
 (1/1) type_specific.io-github-autotest-libvirt.virsh.snapshot_create_as.negative_tests.network_disk.iscsi.device_lun:  PASS (24.67 s)
RESULTS    : PASS 1 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | CANCEL 0