[virsh_cmd:domain] Fix list index out of range issue

[xiaodwan]

In commit a9211f84bf, 'host bridge' filter was added for aarch64. But on some host, lspci doesn't include any 'host bridge' strings. So the way by get_pci_id_using_filter will return an empty list.

This patch checks the pci_id, if it's empty, return test error. And also changes the way to get the host bridge on a host.

[xiaodwan]

JOB ID     : d0a92de5f442aef4a83896a0107e7636114470ed
JOB LOG    : /var/lib/avocado/job-results/job-2024-03-15T00.37-d0a92de/job.log
 (1/1) type_specific.io-github-autotest-libvirt.virsh.detach_device_alias.live.hostdev.pci: CANCEL: The PCI device with xml '<hostdev type="pci" mode="subsystem" managed="yes"><alias name="ua-04b02c7f-db89-409d-9e88-a9ce43de15d3" /><source><address domain="0x0000" slot="0x00" bus="0x00" function="0x0" /></source></hostdev>' does not support attaching to... (52.41 s)
RESULTS    : PASS 0 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | CANCEL 1
JOB HTML   : /var/lib/avocado/job-results/job-2024-03-15T00.37-d0a92de/results.html
JOB TIME   : 52.77 s

[xiaodwan]

Depends on https://github.com/avocado-framework/avocado-vt/pull/3872

[xiaodwan]

@dzhengfy @chunfuwen Please help to review this PR, thanks.

[xiaodwan]

JOB ID     : 6022c530e7cb034ed4252690bd8a54f71573cad6
JOB LOG    : /var/lib/avocado/job-results/job-2024-05-27T06.38-6022c53/job.log
 (1/1) type_specific.io-github-autotest-libvirt.virsh.detach_device_alias.live.hostdev.pci: CANCEL: The PCI device with xml '<hostdev type="pci" mode="subsystem" managed="yes"><alias name="ua-6de3a394-f3e1-4efe-8573-9fea153d66cc" /><source><address domain="0x0000" slot="0x00" bus="0x00" function="0x0" /></source></hostdev>' does not support attaching to... (82.69 s)
RESULTS    : PASS 0 | ERROR 0 | FAIL 0 | SKIP 0 | WARN 0 | INTERRUPT 0 | CANCEL 1
JOB HTML   : /var/lib/avocado/job-results/job-2024-05-27T06.38-6022c53/results.html
JOB TIME   : 86.20 s
``

[xiaodwan]

@dzhengfy Please help to review again, thanks.