Fixed copyright header for keyring-test.cc

Author: bjornmu

plugin/keyring/keyring-test/keyring-test.cc

@@ -1,7 +1,17 @@
-/*
-  Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
-*/
-
+# Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+#
+# 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; version 2 of the License.
+#
+# 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 
 #undef HAVE_PSI_INTERFACE
 #include <my_global.h>