receive/rule: Fixed Segfault issue; Added tests & benchmarks for TSDBStore, fixed multitsdb benchmarks. (#3046)
- Fixed other quite big issue with reusing chunk slice.
- Fixed framing - previously it was wrongly sending single-chunk frames, taking
huge amount of time.
Fix: We deletage closer now to ensure multitsdb operate on valid data.
Signed-off-by: Bartlomiej Plotka <email@example.com>