encap → vlib Relation

File in plugins/ioam-plugin/ioam/encap	Includes file in vlib
ip6_ioam_e2e.c	vlib / vlib.h
ip6_ioam_pot.c	vlib / vlib.h
ip6_ioam_seqno.c	vlib / vlib.h
ip6_ioam_trace.c	vlib / vlib.h