Treat super low staked as unstaked in streamer QOS

[lijunwangs]

Problem

staked nodes with low stakes can abuse the system to get disproportional bandwidth.

Summary of Changes

Treat it as unstaked node for the with stake ratio stake/total_stake < 1 / (max packet per 100 ms)

Fixes #

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.9%. Comparing base (72ee270) to head (c1948ca).
⚠️ Report is 6913 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##           master     #701     +/-   ##
=========================================
- Coverage    81.9%    81.9%   -0.1%     
=========================================
  Files         851      851             
  Lines      230726   230728      +2     
=========================================
- Hits       189009   189008      -1     
- Misses      41717    41720      +3     

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[t-nelson]

r+ SME approval

[mergify]

Backports to the stable branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule.

[mergify]

Backports to the beta branch are to be avoided unless absolutely necessary for fixing bugs, security issues, and perf regressions. Changes intended for backport should be structured such that a minimum effective diff can be committed separately from any refactoring, plumbing, cleanup, etc that are not strictly necessary to achieve the goal. Any of the latter should go only into master and ride the normal stabilization schedule. Exceptions include CI/metrics changes, CLI improvements and documentation updates on a case by case basis.