unit/gatt: Add /TP/GAR/SR/BV-08-C test
unit/gatt: Add /TP/GAR/SR/BV-08-C test

Verify that a Generic Attribute Profile server returns a 0-length part
value when reading a Long Characteristic Descriptor selected by handle
with an offset equal to the length of the Long Characteristic Value.

pkarasev3/bluez,mapfau/bluez,ComputeCycles/bluez,mapfau/bluez,mapfau/bluez,ComputeCycles/bluez,pkarasev3/bluez,mapfau/bluez,ComputeCycles/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,silent-snowman/bluez,ComputeCycles/bluez,silent-snowman/bluez,silent-snowman/bluez,pstglia/external-bluetooth-bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez