Fix AttributeError in ce_lacp on Python 3.9.

lib/ansible/modules/network/cloudengine/ce_lacp.py

@@ -313,7 +313,12 @@ def xml_to_dict(args):
     root = ET.fromstring(args)
     ifmtrunk = root.find('.//ifmtrunk')
     if ifmtrunk is not None:
-        for ele in ifmtrunk.getiterator():
+        try:
+            ifmtrunk_iter = ET.Element.iter(ifmtrunk)
+        except AttributeError:
+            ifmtrunk_iter = ifmtrunk.getiterator()
+
+        for ele in ifmtrunk_iter:
             if ele.text is not None and len(ele.text.strip()) > 0:
                 rdict[ele.tag] = ele.text
     return rdict