Roll infra_libs and gae_ts_mon in luci-py, and add field_specs to all metrics

appengine/third_party/gae_ts_mon/README.md

Index: appengine/third_party/gae_ts_mon/README.md
diff --git a/appengine/third_party/gae_ts_mon/README.md b/appengine/third_party/gae_ts_mon/README.md
index bc9d213a5674e3ad429f6e20654e7d204dc538e9..9c181283a2af25799d23b4f6262cb7ecb513d35d 100644
--- a/appengine/third_party/gae_ts_mon/README.md
+++ b/appengine/third_party/gae_ts_mon/README.md
@@ -76,7 +76,10 @@ for more information.
     from infra_libs import ts_mon
 
     class MyHandler(webapp2.RequestHandler):
-      goats_teleported = ts_mon.CounterMetric('goats/teleported')
+      goats_teleported = ts_mon.CounterMetric(
+          'goats/teleported',
+          'Number of goats teleported',
+          None)
 
       def get(self):
         count = goat_teleporter.teleport()
@@ -119,8 +122,8 @@ globally. Here's an example of how to set up a global metric:
         'task_num':  0,  # instance ID
     }
 
-    remaining = ts_mon.GaugeMetric('goats/remaining')
-    in_flight = ts_mon.GaugeMetric('goats/in_flight)
+    remaining = ts_mon.GaugeMetric('goats/remaining', '...', None)
+    in_flight = ts_mon.GaugeMetric('goats/in_flight', '...', None)
 
     def set_global_metrics():
       # Query some global resource, e.g. Datastore