Serialize odata.type

Author: Caitlin Bales (MSFT)

Templates/Java/models_generated/BaseEntity.java.tt

@@ -17,7 +17,7 @@ import java.util.Map;
     if(((OdcmClass)c).Base == null){
 #>
     @SerializedName("@odata.type")
-    @Expose(serialize = false)
+    @Expose
     public String oDataType;
 
     private transient AdditionalDataManager additionalDataManager = new AdditionalDataManager(this);