auc_3g_test: add AUTS resync test

Used this to catch a bug where the AUTS process failed to copy RAND to the auth
vector (libosmocore).

Depends: libosmocore change-id If943731a78089f0aac3d55245de80596d01314a4
Change-Id: I06dd8671aa515139bdc3f08883f08276662cf25f
2 files changed