virttest.env_process: Tcpdump is stopped too early

Tcpdump is required to get ARP ip when calling wait_for_login.
Stopping it before wait_for_login will make wait_for_login hang for 240s

Signed-off-by: Hao Liu <hliu@redhat.com>
libvirt-tests: Backup inactive domain XML

* Added option to toggle saving active or inactive domain XML for
  libvirt_vm.backup_xml

* Added '--inactive' option when dumping xml for backup when calling
  virsh.dumpxml or libvirt_vm.backup_xml. Without this option, the new
  domain restored will change its inactive xml like following diff permanently.

* using vmXML.new_from_inactive_xml instead of vmXML.new_from_xml to
  backup domain.

```diff
@@ -41,7 +41,9 @@
       <target type='serial' port='0'/>
     </console>
     <input type='mouse' bus='ps2'/>
-    <graphics type='vnc' port='-1' autoport='yes'/>
+    <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'>
+      <listen type='address' address='127.0.0.1'/>
+    </graphics>
     <video>
       <model type='cirrus' vram='9216' heads='1'/>
       <address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x0'/>
@@ -50,4 +52,5 @@
       <address type='pci' domain='0x0000' bus='0x00' slot='0x05'
function='0x0'/>
     </memballoon>
   </devices>
+  <seclabel type='dynamic' model='selinux' relabel='yes'/>
 </domain>
```

Signed-off-by: Hao Liu <hliu@redhat.com>
virttest.libvirt_vm: Fix one line cond-expr

Fix the one line conditional expression which is against PEP8.

Signed-off-by: Hao Liu <hliu@redhat.com>
libvirt.get_started: Added non-interactive option

* Added option —-non-interactive to disable yes/no prompt and suppress
  verbose output.

* Added option —-setup-selinux to force setup SELinux contexts for
  shared/data directory and restore them to defaults.

When running libvirt.get_started from scripts such as CI.  It is necessary
to make it non-interactive and keep things under control by using options.

Signed-off-by: Hao Liu <hliu@redhat.com>
Merge pull request #1146 from Hao-Liu/non_interactive

libvirt.get_started: Added non-interactive option
Merge pull request #1115 from Hao-Liu/workbranch

Tcpdump is stopped too early & Backup inactive domain XML
virttest.utils_test: Fix undefined variable error

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
virttest.standalone_test: Shut down all VMs at the end of ./run

In the early days, it was thought that keeping QEMU processes
up and running after each test suite execution was good to make
testing faster. In practice, it only confuses people to see that
after the suite is done, there are still a lot of aexpect
processes hanging around.

So let's just destroy the environment at the end of the test,
trying to shut down all vms in there nicely, so we won't have
any leftovers after ./run is done.

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
virttest.utils_net: Fix logging message

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
Merge pull request #1151 from autotest/shutdown-vms-post-run

Shutdown vms post run
virt: Add 'session' parameter to RemoteRunner class

If we already have a session, we can use it directly,
no need to pass so many parameters.

Signed-off-by: Li Yang <liyang.fnst@cn.fujitsu.com>
qemu.test: make set_link test support multiple queues

This patch make set_link test support multiple queues.

Signed-off-by: Yunping Zheng <yunzheng@redhat.com>