blobstore: Implement the DoesBucketExist for Blob

[LihaoLiuXs]

Summary

Conformance tested for aws and gcp.

< Provide a brief description of the changes in this PR >

Some conventions to follow

1. add the module name as a prefix
   • for example: add a prefix: docstore: for document store module, blobstore for Blob Store module
2. for a test only PR, add test:
3. for a perf improvement only PR, add perf:
4. for a refactoring only PR, add "refactor:"

[codecov-commenter]

Codecov Report

❌ Patch coverage is 86.48649% with 5 lines in your changes missing coverage. Please review.
✅ Project coverage is 83.18%. Comparing base (30af604) to head (21e25a3).

Files with missing lines	Patch %	Lines
.../salesforce/multicloudj/blob/aws/AwsBlobStore.java	66.66%	1 Missing and 1 partial ⚠️
...lesforce/multicloudj/blob/client/BucketClient.java	60.00%	2 Missing ⚠️
.../multicloudj/blob/aws/async/AwsAsyncBlobStore.java	85.71%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #195      +/-   ##
============================================
+ Coverage     83.16%   83.18%   +0.01%     
  Complexity       91       91              
============================================
  Files           150      150              
  Lines          8145     8182      +37     
  Branches        944      948       +4     
============================================
+ Hits           6774     6806      +32     
- Misses          923      926       +3     
- Partials        448      450       +2     

Flag	Coverage Δ
unittests	83.18% <86.48%> (+0.01%)	⬆️

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[LihaoLiuXs]

Codecov Report

❌ Patch coverage is 70.27027% with 11 lines in your changes missing coverage. Please review. ✅ Project coverage is 83.08%. Comparing base (3610b57) to head (1b27052). ⚠️ Report is 3 commits behind head on main.

Files with missing lines Patch % Lines
...lesforce/multicloudj/blob/client/BucketClient.java 20.00% 4 Missing ⚠️
...lticloudj/blob/async/client/AsyncBucketClient.java 0.00% 3 Missing ⚠️
.../salesforce/multicloudj/blob/aws/AwsBlobStore.java 66.66% 1 Missing and 1 partial ⚠️
.../multicloudj/blob/aws/async/AwsAsyncBlobStore.java 85.71% 0 Missing and 1 partial ⚠️
...oudj/blob/async/driver/AbstractAsyncBlobStore.java 0.00% 1 Missing ⚠️
❌ Your patch status has failed because the patch coverage (70.27%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #195      +/-   ##
============================================
- Coverage     83.14%   83.08%   -0.06%     
  Complexity       91       91              
============================================
  Files           150      150              
  Lines          8134     8171      +37     
  Branches        945      949       +4     
============================================
+ Hits           6763     6789      +26     
- Misses          923      932       +9     
- Partials        448      450       +2     

Flag Coverage Δ
unittests 83.08% <70.27%> (-0.06%) ⬇️
Flags with carried forward coverage won't be shown. Click here to find out more.

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Patch test coverage increased to 86%.

[sandeepvinayak]

seems like the test ran twice in recording mode for gcp, there are duplicate recordings in the PR

[LihaoLiuXs]

Good catch! I updated the recording files for gcp.