* adding copyright header * fix fmt and a test
* [VAULT-2776] Add prefix_filter support to vault * [VAULT-2776] Add filter_default config, update docs * [VAULT-2776] Add changelog file * [VAULT-2776] Update telemetry tests and error handling * [VAULT-2776] Add test fixtures, update test * [VAULT-2776] Update gitignore hcl filter