sysmon: Report process metrics for lxc-start and lxc-attach.

BUG=chromium:838332
TEST=unittests

Change-Id: I6e328e1056e08b321b7bd4eacda4745253f1eeb7
Reviewed-on: https://chromium-review.googlesource.com/1048406
Commit-Ready: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Prathmesh Prabhu <pprabhu@chromium.org>
Reviewed-by: Allen Li <ayatane@chromium.org>
diff --git a/scripts/sysmon/proc_metrics.py b/scripts/sysmon/proc_metrics.py
index fe59f4b..84f8bdf 100644
--- a/scripts/sysmon/proc_metrics.py
+++ b/scripts/sysmon/proc_metrics.py
@@ -50,6 +50,10 @@
                        test_func=partial(_is_process_name, 'lucifer_run_job')),
         _ProcessMetric('apache',
                        test_func=partial(_is_process_name, 'apache2')),
+        _ProcessMetric('lxc-start',
+                       test_func=partial(_is_process_name, 'lxc-start')),
+        _ProcessMetric('lxc-attach',
+                       test_func=partial(_is_process_name, 'lxc-attach')),
     ]
     self._other_metric = _ProcessMetric('other')