Update Dashboard addon to v1.8.0

[maciaszczykm]

No description provided.

[minikube-bot]

Can one of the admins verify this patch?

[codecov-io]

Codecov Report

Merging #2223 into master will decrease coverage by 0.03%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2223      +/-   ##
==========================================
- Coverage   27.74%   27.71%   -0.04%     
==========================================
  Files          82       82              
  Lines        5539     5539              
==========================================
- Hits         1537     1535       -2     
- Misses       3807     3808       +1     
- Partials      195      196       +1

Impacted Files	Coverage Δ
pkg/util/kubeconfig/config.go	46.93% <0%> (-1.37%)	⬇️

---

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 fdf906c...e5303e5. Read the comment docs.

[r2d4]

@minikube-bot ok to test

[dlorenc]

Thanks!