Merge changes from topics "capport_dhcpresults", "nm_cb_capport"

* changes:
  Add CaptivePortalApiUrl to DhcpResults
  Send LinkProperties update on new capport data
tree: 5a7ed975da6d0e4e4dcbffeb7dc8b88969477164
  1. core/
  2. services/
  3. tests/