veins_inet: add missing license

subprojects/veins_inet/examples/veins_inet/obstacles.xml

@@ -1,3 +1,36 @@
+<?xml version="1.0"?>
+
+<!--
+// Copyright (C) 2020 Christoph Sommer <[email protected]>
+//
+// Documentation for these modules is at http://veins.car2x.org/
+//
+// SPDX-License-Identifier: (GPL-2.0-or-later OR CC-BY-SA-4.0)
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+// -
+//
+// At your option, you can also redistribute and/or modify this file
+// under a
+// Creative Commons Attribution-ShareAlike 4.0 International License.
+//
+// You should have received a copy of the license along with this
+// work.  If not, see <http://creativecommons.org/licenses/by-sa/4.0/>.
+-->
+
 <environment>
     <object position="min 40 50 0" orientation="0 0 0" shape="cuboid 70 60 20" material="copper" fill-color="235 128 32" opacity="0.8" />
 </environment>