vmx: Do not require DVS Port ID

It can be safely removed from the VMX, VMWare will still boot the
machine and once another ethernet is added it is updated in the VMX to
zero.  So do not require it and default to zero too since this part of
the XML is done as best effort and it is mentioned even in our
documentation.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

src/vmx/vmx.c

@@ -2901,7 +2901,7 @@ virVMXParseEthernet(virConf *conf, int controller, virDomainNetDef **def)
                                 portId_name,
                                 &(*def)->data.vds.port_id,
                                 0,
-                                false) < 0 ||
+                                true) < 0 ||
             virVMXGetConfigLong(conf,
                                 connectionId_name,
                                 &(*def)->data.vds.connection_id,

tests/vmx2xmldata/ethernet-vds-no-portid.vmx

@@ -0,0 +1,10 @@
+config.version = "8"
+virtualHW.version = "4"
+ethernet0.present = "true"
+ethernet0.virtualDev = "e1000e"
+ethernet0.addressType = "vpx"
+ethernet0.generatedAddress = "00:50:56:87:65:43"
+ethernet0.dvs.switchId = "50 34 26 b2 94 e9 3b 16-1d 68 87 bf ff 4a 54 40"
+ethernet0.dvs.portgroupId = "dvportgroup-1285"
+ethernet0.dvs.connectionId = "408217997"
+displayName = "test"

tests/vmx2xmldata/ethernet-vds-no-portid.xml

@@ -0,0 +1,24 @@
+<domain type='vmware'>
+  <name>test</name>
+  <uuid>00000000-0000-0000-0000-000000000000</uuid>
+  <memory unit='KiB'>32768</memory>
+  <currentMemory unit='KiB'>32768</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='i686'>hvm</type>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <interface type='vds'>
+      <mac address='00:50:56:87:65:43' type='generated'/>
+      <source switchid='503426b2-94e9-3b16-1d68-87bfff4a5440' portid='0' portgroupid='dvportgroup-1285' connectionid='408217997'/>
+      <model type='e1000e'/>
+    </interface>
+    <video>
+      <model type='vmvga' vram='4096' primary='yes'/>
+    </video>
+  </devices>
+</domain>