feat(eviction): add qos tag

[nightmeng]

What type of PR is this?

Features

What this PR does / why we need it:

Add Pod QoS into metric tag

Which issue(s) this PR fixes:

Special notes for your reviewer:

[codecov]

Codecov Report

Attention: 14 lines in your changes are missing coverage. Please review.

Comparison is base (3c06012) 54.80% compared to head (e5fcd62) 55.00%.

Files	Patch %	Lines
pkg/agent/evictionmanager/manager.go	0.00%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #457      +/-   ##
==========================================
+ Coverage   54.80%   55.00%   +0.20%     
==========================================
  Files         499      499              
  Lines       54534    54540       +6     
==========================================
+ Hits        29888    30002     +114     
+ Misses      21419    21301     -118     
- Partials     3227     3237      +10     

Flag	Coverage Δ
unittest	55.00% <0.00%> (+0.20%)	⬆️

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