tests: introduce hugepages-nodeset

This use-case was broken by commit
<fa6bdf6a>.

We allowed this configuration and it was working as expected therefore
we can consider it as regression.  We should have never allowed such
configuration so now the best solution is in case of non-numa guest
silently ignore the 'nodeset' attribute if it's set to '0'.

That will be fixed by following patches.
Signed-off-by: NPavel Hrdina <phrdina@redhat.com>

tests/qemuxml2argvdata/hugepages-nodeset.xml

+<domain type='qemu'>
+  <name>SomeDummyHugepagesGuest</name>
+  <uuid>ef1bdff4-27f3-4e85-a807-5fb4d58463cc</uuid>
+  <memory unit='KiB'>1048576</memory>
+  <currentMemory unit='KiB'>1048576</currentMemory>
+  <memoryBacking>
+    <hugepages>
+      <page size='2048' unit='KiB' nodeset='0'/>
+    </hugepages>
+  </memoryBacking>
+  <vcpu placement='static'>2</vcpu>
+  <os>
+    <type arch='i686' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-i686</emulator>
+    <controller type='usb' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>

tests/qemuxml2argvtest.c

@@ -959,6 +959,7 @@ mymain(void)
     DO_TEST("hugepages-default-2M", NONE);
     DO_TEST("hugepages-default-system-size", NONE);
     DO_TEST("hugepages-default-1G-nodeset-2M", NONE);
+    DO_TEST_FAILURE("hugepages-nodeset", NONE);
     DO_TEST_FAILURE("hugepages-nodeset-nonexist",
                     QEMU_CAPS_DEVICE_PC_DIMM,
                     QEMU_CAPS_OBJECT_MEMORY_FILE,

tests/qemuxml2xmloutdata/hugepages-nodeset.xml

+../qemuxml2argvdata/hugepages-nodeset.xml
\ No newline at end of file

tests/qemuxml2xmltest.c

@@ -332,6 +332,7 @@ mymain(void)
     DO_TEST("hugepages-default-2M", NONE);
     DO_TEST("hugepages-default-system-size", NONE);
     DO_TEST("hugepages-default-1G-nodeset-2M", NONE);
+    DO_TEST("hugepages-nodeset", NONE);
     DO_TEST("hugepages-numa-default-2M", NONE);
     DO_TEST("hugepages-numa-default-dimm", NONE);
     DO_TEST("hugepages-numa-nodeset", NONE);