Enable enhanced connection complete event

This change enables the enhanced connection complete event in order
to receive the local rpa address while connection is completed
with a paired peripheral. This is required if central tries to
repair or key upgrade an already paired device so that the confirm
or the DHKey Check values match during the pairing process

Bug: 22515703
Change-Id: If27f3b22bc568df6f081f8ad13dfc6783a83ae47