remove group constrainte, it's now a normal group

tests/dictionaries_old/40empty_param2/00_base.xml

@@ -0,0 +1,19 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<rougail version="0.9">
+  <services/>
+  <variables>
+    <family name="proxy_authentifie" description="proxy authentifié">
+      <variable name="toto1" type="port" description="Port d'écoute du proxy" mode="expert">
+            </variable>
+      <variable name="toto2" type="port" description="Port d'écoute du proxy NTLM" mode="expert">
+        <value>3127</value>
+      </variable>
+    </family>
+  </variables>
+  <constraints>
+    <fill name="calc_multi_condition">
+      <param name="value" type="nil"/>
+      <target>toto1</target>
+    </fill>
+  </constraints>
+</rougail>

tests/dictionaries_old/40empty_param2/makedict/after.json

@@ -0,0 +1,10 @@
+{
+    "rougail.proxy_authentifie.toto1": {
+        "owner": "default",
+        "value": null
+    },
+    "rougail.proxy_authentifie.toto2": {
+        "owner": "default",
+        "value": "3127"
+    }
+}

tests/dictionaries_old/40empty_param2/makedict/base.json

@@ -0,0 +1,4 @@
+{
+    "rougail.proxy_authentifie.toto1": null,
+    "rougail.proxy_authentifie.toto2": "3127"
+}

tests/dictionaries_old/40empty_param2/makedict/before.json

@@ -0,0 +1,10 @@
+{
+    "rougail.proxy_authentifie.toto1": {
+        "owner": "default",
+        "value": null
+    },
+    "rougail.proxy_authentifie.toto2": {
+        "owner": "default",
+        "value": "3127"
+    }
+}

tests/dictionaries_old/40empty_param2/tiramisu/base.py

@@ -0,0 +1,18 @@
+from importlib.machinery import SourceFileLoader
+from importlib.util import spec_from_loader, module_from_spec
+loader = SourceFileLoader('func', 'tests/dictionaries/../eosfunc/test.py')
+spec = spec_from_loader(loader.name, loader)
+func = module_from_spec(spec)
+loader.exec_module(func)
+for key, value in dict(locals()).items():
+    if key != ['SourceFileLoader', 'func']:
+        setattr(func, key, value)
+try:
+    from tiramisu3 import *
+except:
+    from tiramisu import *
+option_3 = PortOption(name="toto1", doc="Port d'écoute du proxy", default=Calculation(func.calc_multi_condition, Params((), kwargs={'value': ParamValue(None)})), allow_private=True, properties=frozenset({"expert"}))
+option_4 = PortOption(name="toto2", doc="Port d'écoute du proxy NTLM", default="3127", allow_private=True, properties=frozenset({"expert", "mandatory"}))
+option_2 = OptionDescription(name="proxy_authentifie", doc="proxy authentifié", children=[option_3, option_4], properties=frozenset({"expert"}))
+option_1 = OptionDescription(name="rougail", doc="rougail", children=[option_2])
+option_0 = OptionDescription(name="baseoption", doc="baseoption", children=[option_1])