Retry dial and connection errors for grpc stream.

[kartlee]

Pull request to cherry-pick as per #304

-Karthik

[codecov-commenter]

Codecov Report

Merging #308 into v2 will decrease coverage by 0.60%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##               v2     #308      +/-   ##
==========================================
- Coverage   84.01%   83.40%   -0.61%     
==========================================
  Files          30       30              
  Lines         932      934       +2     
==========================================
- Hits          783      779       -4     
- Misses        110      116       +6     
  Partials       39       39              

Impacted Files	Coverage Δ
interceptors/retry/retry.go	75.40% <0.00%> (-3.05%)	⬇️

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[johanbrandhorst]

Thanks for your contribution!

[kartlee]

Thanks for considering the pull request.

-Karthik