unit/test-gatt: Add /TP/GAR/CL/BI-19-C test
unit/test-gatt: Add /TP/GAR/CL/BI-19-C test

Verify Generic Attribute Profile client behavior when the
Read Multiple Characteristic Values procedure fails due to
valid handle.

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