Get the right order of child types in the read-children-types op

Seem like the children types are in random order:

[domain@localhost:9999 /] :read-children-types
{
"outcome" => "success",
"result" => [
"extension",
"host",
"server-group",
"path",
"system-property",
"deployment",
"interface",
"socket-binding-group",
"profile"
]
}