Port to new libosmogsm 'struct osmo_sub_auth_data2'

libosmogsm has recently introdcued a 'struct osmo_sub_auth_data2' as
successor to 'struct osmo_sub_auth_data', together with updated
osmo_auth_gen_vec2/osmo_auth_gen_vec_auts2 API.

The rationale of this new API is to enable
* support for AKA algorithms which use K and/or OP[c] values of 256bit
  (instead of the classic 128bit)
* support for RES length sizes of 4 and 16 bytes (instead of the classic
  8 bytes)

This commit just jumps over to the new API without adding any related
functionality to osmo-hlr.  The latter is left for subsequent commits.

Change-Id: I3207c7bfb73e9ff5471e5c26b66639549e4d48a2
Depends: libosmocore.git Ie775fedba4a3fa12314c0f7c8a369662ef6a40df
---
M TODO-RELEASE
M include/osmocom/hlr/auc.h
M include/osmocom/hlr/db.h
M src/auc.c
M src/ctrl.c
M src/db_auc.c
M src/db_hlr.c
M src/hlr.c
M src/hlr_vty_subscr.c
M tests/auc/auc_test.c
M tests/auc/gen_ts_55_205_test_sets/func_template.c
M tests/db/db_test.c
M tests/db/db_test.err
13 files changed, 194 insertions(+), 137 deletions(-)