Fix network config requirement.
Fix network config requirement.

<network> node is mandatory. However, is <enabled>false</enabled> is present, we do not check for other network information, prevent invalid access in the property tree.


Former-commit-id: bed51210f12c2103e4f159f62b625e45d097d74b
Former-commit-id: d39e7acb016b9aba9660a591e7864188b9c87f34
leosac/leosac,leosac/leosac,islog/leosac,islog/leosac,islog/leosac,leosac/leosac