guestperf: Configure logging on all shell frontends

The logging module will eventually replace the 'debug' parameter
in QEMUMachine and QEMUMonitorProtocol.

Cc: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20171005172013.3098-2-ehabkost@redhat.com>
Reviewed-by: Lukáš Doktor <ldoktor@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

tests/migration/guestperf/shell.py

@@ -26,6 +26,7 @@
 import argparse
 import fnmatch
 import platform
+import logging
 
 from guestperf.hardware import Hardware
 from guestperf.engine import Engine
@@ -147,6 +148,10 @@ def get_scenario(self, args):
 
     def run(self, argv):
         args = self._parser.parse_args(argv)
+        logging.basicConfig(level=(logging.DEBUG if args.debug else
+                                   logging.INFO if args.verbose else
+                                   logging.WARN))
+
 
         engine = self.get_engine(args)
         hardware = self.get_hardware(args)
@@ -179,6 +184,10 @@ def __init__(self):
 
     def run(self, argv):
         args = self._parser.parse_args(argv)
+        logging.basicConfig(level=(logging.DEBUG if args.debug else
+                                   logging.INFO if args.verbose else
+                                   logging.WARN))
+
 
         engine = self.get_engine(args)
         hardware = self.get_hardware(args)
@@ -231,6 +240,10 @@ def __init__(self):
 
     def run(self, argv):
         args = self._parser.parse_args(argv)
+        logging.basicConfig(level=(logging.DEBUG if args.debug else
+                                   logging.INFO if args.verbose else
+                                   logging.WARN))
+
 
         if len(args.reports) == 0:
             print >>sys.stderr, "At least one report required"