stack/erp5/WCFS+NEO: Fix URI by dropping SlapOS convenience hack parameters

NEO/go doesn't understand what it should do with these parameters and
raises an error in case they are added to the NEO URI [1].

[1] https://lab.nexedi.com/kirr/neo/-/blob/f1a1bb9d/go/neo/client.go#L551-553

stack/erp5-zope2/buildout.hash.cfg

@@ -102,4 +102,4 @@ md5sum = 5cf0316fdd17a940031e4083bbededd8
 
 [instance-wcfs.cfg.in]
 filename = instance-wcfs.cfg.in
-md5sum = 74a96e35ea3615243a306d375004d111
+md5sum = 207df763504b503bf8ee6941914582ad

stack/erp5-zope2/instance-wcfs.cfg.in

@@ -23,7 +23,12 @@
 {%   set argv = [] -%}
 {%   set i = 0 -%}
 {%   for k,v in z|dictsort -%}
+{#     Parameters which neither set client nor server: -#}
+{#     they can be ignored as they are merely resulting from a convenience hack. -#}
+{#     (see https://lab.nexedi.com/nexedi/slapos/commit/706801f2) -#}
+{%     if k not in ["_ca", "_key", "_cert"] %}
 {%       do argv.append('%s=%s' % (k,v)) -%}
+{%     endif %}
 {%   endfor -%}
 {%   if len(argv) > 0 -%}
 {%     set zurl = zurl + '&' + '?'.join(argv) -%}

stack/erp5/buildout.hash.cfg

@@ -102,4 +102,4 @@ md5sum = 5cf0316fdd17a940031e4083bbededd8
 
 [instance-wcfs.cfg.in]
 filename = instance-wcfs.cfg.in
-md5sum = 74a96e35ea3615243a306d375004d111
+md5sum = 207df763504b503bf8ee6941914582ad

stack/erp5/instance-wcfs.cfg.in

@@ -23,7 +23,12 @@
 {%   set argv = [] -%}
 {%   set i = 0 -%}
 {%   for k,v in z|dictsort -%}
+{#     Parameters which neither set client nor server: -#}
+{#     they can be ignored as they are merely resulting from a convenience hack. -#}
+{#     (see https://lab.nexedi.com/nexedi/slapos/commit/706801f2) -#}
+{%     if k not in ["_ca", "_key", "_cert"] %}
 {%       do argv.append('%s=%s' % (k,v)) -%}
+{%     endif %}
 {%   endfor -%}
 {%   if len(argv) > 0 -%}
 {%     set zurl = zurl + '&' + '?'.join(argv) -%}