Telegraf 1.39 deprecated bare string entries in inputs.exec commands and
will drop them in 1.45, warning on every start:
W! DeprecationWarning: Value "/scripts/esindexsize.sh" for option
"command" of plugin "inputs.exec" deprecated since version 1.39.0
Each entry is now a single-element argv array. Array form skips shell
parsing, which is fine here: every command is a bare script path from
telegraf's scripts list, no args or shell metacharacters.
Mike Reeves
9f6679c043