Fix appliance properties lost when you create two node from template

gns3server/controller/appliance.py

@@ -15,6 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import copy
 import uuid
 
 
@@ -54,7 +55,7 @@ class Appliance:
 
     @property
     def data(self):
-        return self._data
+        return copy.deepcopy(self._data)
 
     @property
     def name(self):

gns3server/controller/appliance_template.py

@@ -15,6 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+import copy
 import uuid
 
 
@@ -43,4 +44,4 @@ class ApplianceTemplate:
         """
         Appliance data (a hash)
         """
-        return self._data
+        return copy.deepcopy(self._data)

gns3server/controller/project.py

@@ -325,11 +325,12 @@ class Project:
         Create a node from an appliance
         """
         try:
-            template = copy.copy(self.controller.appliances[appliance_id].data)
+            template = self.controller.appliances[appliance_id].data
         except KeyError:
             msg = "Appliance {} doesn't exist".format(appliance_id)
             log.error(msg)
             raise aiohttp.web.HTTPNotFound(text=msg)
+        print(template)
         template["x"] = x
         template["y"] = y
         node_type = template.pop("node_type")