bitbake: runqueue: Handle BBHandledException correctly

If we see a BBHandledException in runqueue, the understanding is the system
handled it, printing a log and traceback is just confusing.

Therefore only print these in the cases where its an unknown/unhandled
exception.

(Bitbake rev: 29d28e22ce431c3d3aabdb88ff4d8cca67a1cfad)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/runqueue.py

@@ -1096,6 +1096,13 @@ class RunQueue:
             raise
         except SystemExit:
             raise
+        except bb.BBHandledException:
+            try:
+                self.teardown_workers()
+            except:
+                pass
+            self.state = runQueueComplete
+            raise
         except:
             logger.error("An uncaught exception occured in runqueue, please see the failure below:")
             try: