More plot.0= -> plot= fixups, attempt #2.

It turns out I failed to use my eyes when checking this was fixed the
first time and it actually lost the second plot in the comparison.

Change-Id: I97be3b30f4cb3fd3cbc01a819d25a351e355554b

Author: georges-arm

lnt/server/ui/views.py

@@ -695,10 +695,10 @@ def v4_run_graph(id):
 
     # Convert the old style test parameters encoding.
     args = {'highlight_run': id, 'plot': []}
-    for name, value in request.args.items():
+    for name, values in request.args.to_dict(flat=False).items():
         # If this isn't a test specification, just forward it.
         if not name.startswith('test.'):
-            args[name] = value
+            args[name] = values
             continue
 
         # Otherwise, rewrite from the old style of::
@@ -709,8 +709,8 @@ def v4_run_graph(id):
         #
         #   plot=<machine id>.<test id>.<sample field index>
         test_id = name.split('.', 1)[1]
-        args['plot'].append('%d.%s.%s' % (
-            run.machine.id, test_id, value))
+        for value in values:
+            args['plot'].append('%d.%s.%s' % (run.machine.id, test_id, value))
 
     return v4_redirect(v4_url_for(".v4_graph", **args))