Fix python test

Fix the python test to ensure the cmdLine is found in at least one
process instead of them all because we cannot fetch the cmdLine from
privileged process.

metricbeat/module/system/test_system.py

@@ -422,13 +422,6 @@ def test_process(self):
         for evt in output:
             process = evt["system"]["process"]
             found_cmdline |= "cmdline" in process
-            if not found_cmdline:
-                try:
-                    print("ProcessName: ", evt['process']['pid'])
-                    print("ProcessName: ", evt['process']['name'])
-                    print("ProcessArgs: ", evt['process']['args'])
-                except Exception:
-                    print(">>>>>>>>>>>>>>>>>>>> did not find pid, name or args for process")
 
             # Remove 'env' prior to checking documented fields because its keys are dynamic.
             process.pop("env", None)
@@ -441,9 +434,8 @@ def test_process(self):
             process.pop("num_threads", None)
 
             self.assertCountEqual(SYSTEM_PROCESS_FIELDS, process.keys())
-
-            self.assertTrue(
-                found_cmdline, "cmdline not found in any process events")
+        self.assertTrue(
+            found_cmdline, "cmdline not found in any process events")
 
     @unittest.skipUnless(re.match("(?i)linux|darwin|freebsd", sys.platform), "os")
     def test_process_unix(self):