Add gRPC support to Dapr testcontainer

[wlfgang]

Description

Added a simple withAppProtocol method to the DaprContainer test container which allows the user to specify --app-protocol either HTTP or GRPC, allowing projects to exercise gRPC services from integration tests.

Issue reference

This will close #1578

Checklist

Please make sure you've completed the relevant tasks for this PR, out of the following list:

Let me know if there's documentation that should be updated, I can add that.

• Code compiles correctly
• Created/updated tests
• Extended the documentation

[mcruzdev]

Hi @wlfgang thanks for this pull request, you need to sign-off your commit.

[wlfgang]

Hi @wlfgang thanks for this pull request, you need to sign-off your commit.

Thanks @mcruzdev -- I've added the DCO to the commit.

[artur-ciocanu]

Nicely done! Thanks a lot for your contribution @wlfgang!

[artur-ciocanu]

@dapr/maintainers-java-sdk and @dapr/approvers-java-sdk let me know if you have any concerns merging this PR.

[cicoyle]

🙌🏻 thanks for the PR here!

[artur-ciocanu]

@wlfgang could you please adjust the code based on @salaboy feedback.

Thank you.

[wlfgang]

@wlfgang could you please adjust the code based on @salaboy feedback.

Thank you.

Just made the fix, hopefully we should be good now!

[artur-ciocanu]

Thank you! ❤️

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 78.49%. Comparing base (d759c53) to head (93701d2).
⚠️ Report is 236 commits behind head on master.

Files with missing lines	Patch %	Lines
...ain/java/io/dapr/testcontainers/DaprContainer.java	85.71%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #1586      +/-   ##
============================================
+ Coverage     76.91%   78.49%   +1.57%     
- Complexity     1592     1935     +343     
============================================
  Files           145      216      +71     
  Lines          4843     5872    +1029     
  Branches        562      659      +97     
============================================
+ Hits           3725     4609     +884     
- Misses          821      926     +105     
- Partials        297      337      +40     

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