This commit adds debian build infrastructure for ipsec-auth package.
LICENSE, changelog and copyright files are added. The package is also
configured and created, containing the ipsec server systemd unit file.
Test plan:
PASS: Build ipsec-auth package successfully.
PASS: Full build, system install and deploy DC system w/ ipsec-auth
package successfully included and installed.
Story: 2010940
Task: 49413
Co-Authored-By: Andy Ning <andy.ning@windriver.com>
Signed-off-by: Manoel Benedito Neto <manoel.beneditoneto@windriver.com>
Change-Id: I32fc624bda2177eb52bbeca8867ac0ad867b0fda