module templates: Refactor member management.

This patch refactors the module template for modules with member
management, in a way that the addition of member management command
logic is not duplicated in different states or actions.

This idiom has been applied recently along with other fixes to modules
with idempotence issues reducing the modules code size and centering
code logic in specific blocks.

utils/templates/ipamodule+member.py.in

@@ -202,6 +202,9 @@ def main():
             # Make sure $name exists
             res_find = find_$name(ansible_module, name)
 
+            # add/del lists
+            PARAMETER2_add, PARAMETER2_del = [], []
+
             # Create command
             if state == "present":
 
@@ -228,19 +231,6 @@ def main():
                         PARAMETER2_add, PARAMETER2_del = gen_add_del_lists(
                                 PARAMETER2, res_find.get("member_PARAMETER2"))
 
-                        # Add members
-                        if len(PARAMETER2_add) > 0:
-                            commands.append([name, "$name_add_member",
-                                             {
-                                                 "PARAMETER2": PARAMETER2_add,
-                                             }])
-                        # Remove members
-                        if len(PARAMETER2_del) > 0:
-                            commands.append([name, "$name_remove_member",
-                                             {
-                                                 "PARAMETER2": PARAMETER2_del,
-                                             }])
-
                 elif action == "member":
                     if res_find is None:
                         ansible_module.fail_json(
@@ -248,16 +238,10 @@ def main():
 
                     # Reduce add lists for PARAMETER2
                     # to new entries only that are not in res_find.
-                    if PARAMETER2 is not None and \
-                       "API_PARAMETER2_NAME" in res_find:
-                        PARAMETER2 = gen_add_list(
-                            PARAMETER2, res_find["API_PARAMETER2_NAME"])
-
                     if PARAMETER2 is not None:
-                        commands.append([name, "$name_add_member",
-                                         {
-                                             "PARAMETER2": PARAMETER2,
-                                         }])
+                        PARAMETER2_add = gen_add_list(
+                            PARAMETER2, res_find.get("member_PARAMETER2"))
+
 
             elif state == "absent":
                 if action == "$name":
@@ -272,18 +256,27 @@ def main():
                     # Reduce del lists of member_host and member_hostgroup,
                     # to the entries only that are in res_find.
                     if PARAMETER2 is not None:
-                        PARAMETER2 = gen_intersection_list(
-                            PARAMETER2, res_find.get("API_PARAMETER2_NAME"))
-
-                    if PARAMETER2 is not None:
-                        commands.append([name, "$name_remove_member",
-                                         {
-                                             "PARAMETER2": PARAMETER2,
-                                         }])
+                        PARAMETER2_del = gen_intersection_list(
+                            PARAMETER2, res_find.get("member_PARAMETER2"))
 
             else:
                 ansible_module.fail_json(msg="Unkown state '%s'" % state)
 
+            # Member management
+
+            # Add members
+            if PARAMETER2_add:
+                commands.append([name, "$name_add_member",
+                                 {
+                                     "PARAMETER2": PARAMETER2_add,
+                                 }])
+
+            # Remove members
+            if PARAMETER2_del:
+                commands.append([name, "$name_remove_member",
+                                 {
+                                     "PARAMETER2": PARAMETER2_del,
+                                 }])
 
         # Execute commands