Conditions are ANDed inside the same matcher but matchers are ORed
Including unit tests for "promtool tsdb dump".
Refactor some matchers scraping utils.
Signed-off-by: machine424 <ayoubmrini424@gmail.com>
Improve promtool tsdb analyze
- Make it more suitable for variable size float chunks.
- Add support for histogram chunks.
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Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>