net-test: packetdrill: run_all: extra -v are passed to pktdrill cmd

Sometimes, it is useful to have more info from packetdrill which can be
done by passing '-v' parameter to it.

Instead of having to modify run_all.py or run packetdrill manually, it
is now possible to add extra -v, e.g.

  $ run_all.py -lL -vvvv

Signed-off-by: Matthieu Baerts <[email protected]>

gtests/net/packetdrill/run_all.py

@@ -46,6 +46,8 @@ def CmdTest(self, path, variant, extra_args=None):
     cmd.extend(self.default_args.split())
     if extra_args is not None:
       cmd.extend(extra_args.split())
+    if self.args['verbose'] > 1:
+      cmd.append('-' + 'v' * (self.args['verbose'] - 1))
     cmd.append(basename)
 
     return (cmd, execdir, path, variant)
@@ -261,7 +263,8 @@ def ParseArgs():
                     help="max number of tests running in parallel")
   args.add_argument('-s', '--subdirs', action='store_true')
   args.add_argument('-S', '--serialized', action='store_true')
-  args.add_argument('-v', '--verbose', action='store_true')
+  args.add_argument('-v', '--verbose', action='count', default=0,
+                    help="can be repeated to run packetdrill with -v")
   return vars(args.parse_args())