test: enable MPU and KMS integration tests on GCP blob store

[Yaminik1996]

Summary

< 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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.06%. Comparing base (37f1e07) to head (fd1cab7).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main     #133      +/-   ##
============================================
+ Coverage     82.94%   83.06%   +0.12%     
  Complexity       36       36              
============================================
  Files           147      148       +1     
  Lines          7585     7635      +50     
  Branches        874      888      +14     
============================================
+ Hits           6291     6342      +51     
- Misses          858      859       +1     
+ Partials        436      434       -2     

Flag	Coverage Δ
unittests	83.06% <ø> (+0.12%)	⬆️

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