feature: Dashboard displaying the setCanaryScale values

[schakrad]

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this is a chore.
• The title of the PR is (a) conventional, (b) states what changed, and (c) suffixes the related issues number. E.g. "fix(controller): Updates such and such. Fixes #1234".
• I've signed my commits with DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My builds are green. Try syncing with master if they are not.
• My organization is added to USERS.md.
  Before

After

[codecov]

Codecov Report

Merging #1923 (6e6375b) into master (676c865) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1923      +/-   ##
==========================================
+ Coverage   82.38%   82.40%   +0.01%     
==========================================
  Files         119      119              
  Lines       16872    16910      +38     
==========================================
+ Hits        13900    13934      +34     
- Misses       2282     2285       +3     
- Partials      690      691       +1     

Impacted Files	Coverage Δ
rollout/trafficrouting/istio/controller.go	50.81% <0.00%> (-1.63%)	⬇️
controller/metrics/metrics.go	100.00% <0.00%> (ø)
controller/metrics/prommetrics.go	100.00% <0.00%> (ø)
utils/record/record.go	80.55% <0.00%> (+2.83%)	⬆️

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[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
3.6% Duplication

[rbreeze]

LGTM