Remove lockmode update

Change-Id: I811878bed2bdef79e4546da0048c774d2dc9dfc5
delete_network and delete_subnet

Change-Id: I29178204b3a220c1c6010f59272981fb1b4099fe
Call _store_ip_allocation as soon as an IP is generated

Change-Id: Iac3ff74c758ec4cd01e1a0e15fb03b08e234587c