[#6594] Added ignore_externals to SVN export

Signed-off-by: Cory Johns <cjohns@slashdotmedia.com>
diff --git a/ForgeSVN/forgesvn/model/svn.py b/ForgeSVN/forgesvn/model/svn.py
index 1ff9564..9074946 100644
--- a/ForgeSVN/forgesvn/model/svn.py
+++ b/ForgeSVN/forgesvn/model/svn.py
@@ -689,7 +689,8 @@
         try:
             self._svn.export(path,
                              dest,
-                             revision=pysvn.Revision(pysvn.opt_revision_kind.number, commit))
+                             revision=pysvn.Revision(pysvn.opt_revision_kind.number, commit),
+                             ignore_externals=True)
             zipdir(dest, tmpfilename)
             os.rename(tmpfilename, filename)
         finally: