feat: example dashboard - add rollout stat row

[huikang]

• Switch to stat panel
• fix missing labels in some metrics on example dashboard
• add job label to avoid interference with service discovery results
• replace deprecated rollout_phase with rollout_info

Signed-off-by: Hui Kang [email protected]

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.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
9.6% Duplication

[huikang]

• Landing page

• controller stat

• rollout stat 1 for selected rollout

• rollout stat 2 for selected rollout

[codecov]

Codecov Report

Merging #1343 (c788a57) into master (e6bae87) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1343   +/-   ##
=======================================
  Coverage   81.27%   81.27%           
=======================================
  Files         107      107           
  Lines        9824     9824           
=======================================
  Hits         7984     7984           
  Misses       1297     1297           
  Partials      543      543           

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