p.haul: work around process name caching in psutil

The python module psutil caches the process name so that sometimes
restored process have 'criu' as the process name. psutil uses the
process' PID and start time to decide if the process name has to be
updated. But as the start time does not change it will sometimes not
change to the restored process name but it will keep listing the restore
process as 'criu'. This is tracked at:

 giampaolo/psutil#692

Signed-off-by: Adrian Reber <areber@redhat.com>

webgui/procs.py

@@ -45,10 +45,19 @@ def GET(self):
             root = {}
 
             for p in psutil.process_iter():
+                if callable(p.cmdline):
+                    name = os.path.basename(p.cmdline()[0])
+                    if name is '':
+                        name = p.name()
+                else:
+                    try:
+                        name = os.path.basename(p.cmdline[0])
+                    except:
+                        name = p.name
                 proc = {
                     # name and ppid are either functions or variables in
                     # different versions of psutil.
-                    "name": p.name() if callable(p.name) else p.name,
+                    "name": name,
                     "id": p.pid,
                     "parent": p.ppid() if callable(p.ppid) else p.ppid,
                     "children": [],