Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/outputs/discard/README.md

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+# Discard Output Plugin
+
+This plugin discards all metrics written to it and is meant for testing
+purposes.
+
+⭐ Telegraf v1.2.0
+🏷️ testing
+💻 all
+
+## Global configuration options <!-- @/docs/includes/plugin_config.md -->
+
+In addition to the plugin-specific configuration settings, plugins support
+additional global and plugin configuration settings. These settings are used to
+modify metrics, tags, and field or create aliases and configure ordering, etc.
+See the [CONFIGURATION.md][CONFIGURATION.md] for more details.
+
+[CONFIGURATION.md]: ../../../docs/CONFIGURATION.md#plugins
+
+## Configuration
+
+```toml @sample.conf
+# Send metrics to nowhere at all
+[[outputs.discard]]
+  # no configuration
+```

plugins/outputs/discard/discard.go

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+//go:generate ../../../tools/readme_config_includer/generator
+package discard
+
+import (
+	_ "embed"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/plugins/outputs"
+)
+
+//go:embed sample.conf
+var sampleConfig string
+
+type Discard struct{}
+
+func (*Discard) SampleConfig() string {
+	return sampleConfig
+}
+
+func (*Discard) Connect() error { return nil }
+func (*Discard) Close() error   { return nil }
+func (*Discard) Write([]telegraf.Metric) error {
+	return nil
+}
+
+func init() {
+	outputs.Add("discard", func() telegraf.Output { return &Discard{} })
+}

plugins/outputs/discard/sample.conf

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+# Send metrics to nowhere at all
+[[outputs.discard]]
+  # no configuration