Fix interleave discovery regression
Fix interleave discovery regression

Command complete event for LE commands are not being handled properly
due blocking calls of LE Set Scan Parameters and LE Set Scan Enable
Commands. Fix wrong Discovering signal emission in the interleaved
discovery mode.

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