Add WaitServer method

[chasefleming]

Closes: #577

I will cherry pick this to a PR on the master branch after merged.

---

For contributor use:

• Targeted PR against master branch
• Linked to Github issue with discussion and accepted design OR link to spec that describes this work.
• Code follows the standards mentioned here.
• Updated relevant documentation
• Re-reviewed Files changed in the Github PR explorer
• Added appropriate labels

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

Comparison is base (66d5a88) 62.30% compared to head (150b76d) 62.26%.

Files	Patch %	Lines
access/grpc/client.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##            v0.41     #578      +/-   ##
==========================================
- Coverage   62.30%   62.26%   -0.05%     
==========================================
  Files          24       24              
  Lines        2966     2968       +2     
==========================================
  Hits         1848     1848              
- Misses        994      996       +2     
  Partials      124      124              

Flag	Coverage Δ
unittests	62.26% <0.00%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[chasefleming]

@turbolent @nvdtf @janezpodhostnik @sideninja @bluesign does this also look good to merge to you?

[bluesign]

looks good to me

[chasefleming]

@janezpodhostnik @bluesign @jribbink I cherry picked this over to master as well. Here is the PR: #593