COSI-79: Allow end-users to create buckets and access from any namespace

[anurag4DSB]

End users can create buckets and access from any namespace

• I removed namespace from all CRs as we are not bound by namespace but by permissions for the COSI driver.
• Updated docs, to ensure we do not have such a requirement
• Some CI improvements for bugs and added E2E tests for helm as well (change of decision earlier)
• Updated both Kustomize deployment and helm charts with new permissions for COSI side car

Next PR: Make helm charts more extensible for users by adding everything to values.yaml. Part of this PR is a first step towards adding reliable e2e test for helm.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.47%. Comparing base (1ba6548) to head (908c8ce).
Report is 10 commits behind head on main.

Additional details and impacted files

Files with missing lines	Coverage Δ
pkg/driver/provisioner_server_impl.go	97.64% <100.00%> (ø)

Components	Coverage Δ
🏠 Main Package	∅ <ø> (∅)
🚗 Driver Package	92.22% <100.00%> (ø)
📡 gRPC Factory Package	82.35% <ø> (ø)
🔐 IAM Client Package	98.17% <ø> (ø)
🌐 S3 Client Package	94.33% <ø> (ø)
🔧 Util Package	100.00% <ø> (ø)
🔖 Constants Package	∅ <ø> (∅)

@@           Coverage Diff           @@
##             main     #120   +/-   ##
=======================================
  Coverage   92.47%   92.47%           
=======================================
  Files          11       11           
  Lines         771      771           
=======================================
  Hits          713      713           
  Misses         49       49           
  Partials        9        9