s4:provision Move exceptions into a new file

This allows provisionbackend and provision to both raise ProvisionException

source4/scripting/python/samba/provisionexceptions.py

@@ -0,0 +1,34 @@
+#
+# Unix SMB/CIFS implementation.
+# backend code for provisioning a Samba4 server
+
+# Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2007-2008
+# Copyright (C) Andrew Bartlett <abartlet@samba.org> 2008-2009
+# Copyright (C) Oliver Liebel <oliver@itc.li> 2008-2009
+#
+# Based on the original in EJS:
+# Copyright (C) Andrew Tridgell <tridge@samba.org> 2005
+#
+# 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 3 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, see <http://www.gnu.org/licenses/>.
+#
+
+class ProvisioningError(Exception):
+    """A generic provision error."""
+
+class InvalidNetbiosName(Exception):
+    """A specified name was not a valid NetBIOS name."""
+    def __init__(self, name):
+        super(InvalidNetbiosName, self).__init__("The name '%r' is not a valid NetBIOS name" % name)
+
+