core: Rename services_changed to uuids_changed
core: Rename services_changed to uuids_changed

This patch renames the services_changed function to uuids_changed to
avoid misinterpretation. "Service Changed" expression is used to refer
to a GATT operation used to notify clients that a given attribute range
in the GATT server is not valid anymore.

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