Adding upstream version 1.34.4.

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

plugins/processors/override/README.md

@@ -0,0 +1,45 @@
+# Override Processor Plugin
+
+The override processor plugin allows overriding all modifications that are
+supported by input plugins and aggregators:
+
+* name_override
+* name_prefix
+* name_suffix
+* tags
+
+All metrics passing through this processor will be modified accordingly.  Select
+the metrics to modify using the standard [metric
+filtering](../../../docs/CONFIGURATION.md#metric-filtering) options.
+
+Values of *name_override*, *name_prefix*, *name_suffix* and already present
+*tags* with conflicting keys will be overwritten. Absent *tags* will be
+created.
+
+Use-case of this plugin encompass ensuring certain tags or naming conventions
+are adhered to irrespective of input plugin configurations, e.g. by
+`taginclude`.
+
+## 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
+# Apply metric modifications using override semantics.
+[[processors.override]]
+  ## All modifications on inputs and aggregators can be overridden:
+  # name_override = "new_name"
+  # name_prefix = "new_name_prefix"
+  # name_suffix = "new_name_suffix"
+
+  ## Tags to be added (all values must be strings)
+  # [processors.override.tags]
+  #   additional_tag = "tag_value"
+```