Add Redis persistent DB mgmt commands when clearing history

[achimnol]

This is a follow up to #532.

[codecov]

Codecov Report

Merging #565 (3ba66bb) into main (da08f7f) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

❗ Current head 3ba66bb differs from pull request most recent head 33f2aac. Consider uploading reports for the commit 33f2aac to get more accurate results

@@            Coverage Diff             @@
##             main     #565      +/-   ##
==========================================
- Coverage   49.39%   49.35%   -0.04%     
==========================================
  Files          55       55              
  Lines        9131     9137       +6     
==========================================
  Hits         4510     4510              
- Misses       4621     4627       +6     

Impacted Files	Coverage Δ
src/ai/backend/manager/cli/__main__.py	45.31% <0.00%> (-2.23%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update da08f7f...33f2aac. Read the comment docs.