improvements on PPMS and LS370

- PPMS: improved machanism for 10 K waiting
- LS370: fixed an issue with auto range
+ LS370: show test for all status bits

Change-Id: Ia6454141917893f0e5c6c4351df3a864942bb629
Reviewed-on: https://forge.frm2.tum.de/review/c/sine2020/secop/playground/+/23495
Tested-by: Jenkins Automated Tests <pedersen+jenkins@frm2.tum.de>
Reviewed-by: Markus Zolliker <markus.zolliker@psi.ch>

secop_psi/ls370sim.py

@@ -21,7 +21,6 @@
 """a very simple simulator for a LakeShore Model 370"""
 
 from secop.modules import Communicator
-#from secop.lib import mkthread
 
 class Ls370Sim(Communicator):
     CHANNEL_COMMANDS = [
@@ -70,8 +69,3 @@ class Ls370Sim(Communicator):
         #if command.startswith('R'):
         #    print('> %s\t< %s' % (command, reply))
         return ';'.join(reply)
-
-    #def run(self):
-    #    # time dependent simulation
-    #    while True:
-    #        time.sleep(1)