Merge changes Ib61dfbf9,I18a6c5b3,I461c4167,I3d0dd625 into main

* changes:
  Clean up FLAG_VALIDATE_NETWORK_ON_IPSEC_LOSS
  Clean up FLAG_EVALUATE_IPSEC_LOSS_ON_LP_NC_CHANGE
  Clean up FLAG_ENFORCE_MAIN_USER
  Clean up FLAG_HANDLE_SEQ_NUM_LEAP