stack/erp5: use Python 3 compatible variants for SOAPpy and suds eggs.

stack/erp5/buildout-py3.cfg

@@ -86,6 +86,10 @@ include-dirs +=
   ${cyrus-sasl:location}/include
 
 [eggs]
+eggs +=
+## Python 3 variant
+  SOAPpy-py3
+  suds-py3
 eggs -=
 ## Python 2 only
   ZServer
@@ -206,3 +210,7 @@ jedi = 0.16.0
 parso = 0.5.2
 # 2to3 fixers to port code to python3
 zope.fixers = 1.1.2
+SOAPpy-py3 = 0.52.26
+defusedxml = 0.7.1
+suds-py3 = 1.4.5.0
+wstools-py3 = 0.54.4