vcsim: propagate VMwareDVSConfigSpec in CreateDVS_Task

Fixes #3264

govc/test/network.bats

@@ -2,6 +2,19 @@
 
 load test_helper
 
+@test "network dvs" {
+  vcsim_env
+
+  run govc dvs.create -discovery-protocol cdp -product-version 6.6.0 -mtu 1500 DVS1
+  assert_success
+
+  dvs=$(govc object.collect -o -json network/DVS1)
+
+  assert_equal cdp "$(jq -r .config.linkDiscoveryProtocolConfig.protocol <<<"$dvs")"
+  assert_equal 1500 "$(jq -r .config.maxMtu <<<"$dvs")"
+  assert_equal 6.6.0 "$(jq -r .summary.productInfo.version <<<"$dvs")"
+}
+
 @test "network dvs backing" {
   vcsim_env
 

simulator/folder.go

@@ -628,6 +628,15 @@ func (f *Folder) CreateDVSTask(ctx *Context, req *types.CreateDVS_Task) soap.Has
 			},
 		}
 
+		if spec, ok := req.Spec.ConfigSpec.(*types.VMwareDVSConfigSpec); ok {
+			configInfo.LinkDiscoveryProtocolConfig = spec.LinkDiscoveryProtocolConfig
+			configInfo.MaxMtu = spec.MaxMtu
+			configInfo.IpfixConfig = spec.IpfixConfig
+			configInfo.LacpApiVersion = spec.LacpApiVersion
+			configInfo.MulticastFilteringMode = spec.MulticastFilteringMode
+			configInfo.NetworkOffloadSpecId = spec.NetworkOffloadSpecId
+		}
+
 		if spec.Contact != nil {
 			configInfo.Contact = *spec.Contact
 		}