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

client/third_party/infra_libs/ts_mon/__init__.py

 # Copyright 2015 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 from infra_libs.ts_mon.config import add_argparse_options
 from infra_libs.ts_mon.config import process_argparse_options
 
 from infra_libs.ts_mon.common.distribution import Distribution
 from infra_libs.ts_mon.common.distribution import FixedWidthBucketer
 from infra_libs.ts_mon.common.distribution import GeometricBucketer
 
 from infra_libs.ts_mon.common.errors import MonitoringError
 from infra_libs.ts_mon.common.errors import MonitoringDecreasingValueError
 from infra_libs.ts_mon.common.errors import MonitoringDuplicateRegistrationError
 from infra_libs.ts_mon.common.errors import MonitoringIncrementUnsetValueError
 from infra_libs.ts_mon.common.errors import MonitoringInvalidFieldTypeError
 from infra_libs.ts_mon.common.errors import MonitoringInvalidValueTypeError
 from infra_libs.ts_mon.common.errors import MonitoringTooManyFieldsError
 from infra_libs.ts_mon.common.errors import MonitoringNoConfiguredMonitorError
 from infra_libs.ts_mon.common.errors import MonitoringNoConfiguredTargetError
 
 from infra_libs.ts_mon.common.helpers import ScopedIncrementCounter
 
 from infra_libs.ts_mon.common.interface import close
 from infra_libs.ts_mon.common.interface import flush
 from infra_libs.ts_mon.common.interface import reset_for_unittest
 
+from infra_libs.ts_mon.common.metrics import BooleanField
+from infra_libs.ts_mon.common.metrics import IntegerField
+from infra_libs.ts_mon.common.metrics import StringField
+
 from infra_libs.ts_mon.common.metrics import BooleanMetric
 from infra_libs.ts_mon.common.metrics import CounterMetric
 from infra_libs.ts_mon.common.metrics import CumulativeDistributionMetric
 from infra_libs.ts_mon.common.metrics import CumulativeMetric
-from infra_libs.ts_mon.common.metrics import DistributionMetric
 from infra_libs.ts_mon.common.metrics import FloatMetric
 from infra_libs.ts_mon.common.metrics import GaugeMetric
 from infra_libs.ts_mon.common.metrics import NonCumulativeDistributionMetric
 from infra_libs.ts_mon.common.metrics import MetricsDataUnits
 from infra_libs.ts_mon.common.metrics import StringMetric
 
 from infra_libs.ts_mon.common.targets import TaskTarget
 from infra_libs.ts_mon.common.targets import DeviceTarget