bitbake: server/process: Note when commands complete in logs

Its hard to tell from the server logs whether commands complete or not
(or how long they take). Add extra info to allow more debugging of
server timeouts.

(Bitbake rev: d388f6d159b9d7e1ed3f199f2d1aca0c473cda6d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 56285ada585ec1481449522282b335bcb5a2671e)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/server/process.py

@@ -221,6 +221,7 @@ class ProcessServer(multiprocessing.Process):
                 try:
                     print("Running command %s" % command)
                     self.command_channel_reply.send(self.cooker.command.runCommand(command))
+                    print("Command Completed")
                 except Exception as e:
                    logger.exception('Exception in server main event loop running command %s (%s)' % (command, str(e)))