Rename processor

Renames an existing field. If the field doesn’t exist or the new name is already used, an exception will be thrown.

Name	Required	Default	Description
`field`	yes	-	The field to be renamed. Supports template snippets.
`target_field`	yes	-	The new name of the field. Supports template snippets.
`ignore_missing`	no	`false`	If `true` and `field` does not exist, the processor quietly exits without modifying the document.
`override`	no	`false`	If `true`, the processor will update pre-existing non-null-valued fields. When set to `false`, such fields will not be touched.
`description`	no	-	Description of the processor. Useful for describing the purpose of the processor or its configuration.
`if`	no	-	Conditionally execute the processor. See Conditionally run a processor.
`ignore_failure`	no	`false`	Ignore failures for the processor. See Handling pipeline failures.
`on_failure`	no	-	Handle failures for the processor. See Handling pipeline failures.
`tag`	no	-	Identifier for the processor. Useful for debugging and metrics.

{ "rename": { "field": "provider", "target_field": "cloud.provider" } }