Support algorithm configurability in PacketUtils EspHeader

This CL adds support to configure the IPsec algortihms to build
EspHeader.

This is a prepration CL to test kernel implementation of IPsec
algorithms.

Bug: 171083832
Test: atest CtsNetTestCases
Original-Change: https://android-review.googlesource.com/1503693
Merged-In: I53f59815d6cb879dae622fcbd17616564a97111a
Change-Id: I53f59815d6cb879dae622fcbd17616564a97111a
1 file changed