This commit allows to invoke the rule_checker with a chain of
filepaths as arguments. If no paths are provided it reads from standard
input.
The -rule-file flag remains for backward-compatibility.
On processing errors the return code is now 1. For bad arguments
the return code is now 2.
- Move CONTRIBUTORS.md to the more common AUTHORS.
- Added the required NOTICE file.
- Changed "Prometheus Team" to "The Prometheus Authors".
- Reverted the erroneous changes to the Apache License.
This tool does the simple job of checking a Prometheus rule file for validity
and printing the parsed rules if the loading succeeds. This came out of
an immediate need to quickly verify changes to existing rule files.
Fabian Reinartz