Add USB addresses to qemuhotplug test cases

This test assumes the XML will be the same after formatting.
Add USB addresses to it to keep it working when we autoassign them.

tests/qemuhotplugtestdata/qemuhotplug-console-compat-2-live+console-virtio.xml

@@ -100,6 +100,7 @@
     </channel>
     <input type='tablet' bus='usb'>
       <alias name='input0'/>
+      <address type='usb' bus='0' port='1'/>
     </input>
     <input type='mouse' bus='ps2'>
       <alias name='input1'/>

tests/qemuxml2argvdata/qemuxml2argv-console-compat-2-live.xml

@@ -95,6 +95,7 @@
     </channel>
     <input type='tablet' bus='usb'>
       <alias name='input0'/>
+      <address type='usb' bus='0' port='1'/>
     </input>
     <input type='mouse' bus='ps2'>
       <alias name='input1'/>

tests/qemuxml2argvdata/qemuxml2argv-console-compat-2.xml

@@ -78,7 +78,9 @@
       <target type='virtio' name='org.qemu.guest_agent.0'/>
       <address type='virtio-serial' controller='0' bus='0' port='1'/>
     </channel>
-    <input type='tablet' bus='usb'/>
+    <input type='tablet' bus='usb'>
+      <address type='usb' bus='0' port='1'/>
+    </input>
     <input type='mouse' bus='ps2'/>
     <input type='keyboard' bus='ps2'/>
     <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'>