OBS: filesystems implementation

[artem-lifshits]

Summary of the Pull Request

Added ability to create filesystem OBS buckets.

PR Checklist

• Refers to: opentelekomcloud_obs_bucket - support Parallel File System creation #2209
• Tests added/passed.
• Documentation updated.
• Schema updated.
• Release notes added.

Acceptance Steps Performed

=== RUN   TestAccObsBucket_basic
=== PAUSE TestAccObsBucket_basic
=== CONT  TestAccObsBucket_basic
--- PASS: TestAccObsBucket_basic (68.60s)
=== RUN   TestAccObsBucket_tags
=== PAUSE TestAccObsBucket_tags
=== CONT  TestAccObsBucket_tags
--- PASS: TestAccObsBucket_tags (25.28s)
=== RUN   TestAccObsBucket_versioning
=== PAUSE TestAccObsBucket_versioning
=== CONT  TestAccObsBucket_versioning
--- PASS: TestAccObsBucket_versioning (46.03s)
=== RUN   TestAccObsBucket_logging
=== PAUSE TestAccObsBucket_logging
=== CONT  TestAccObsBucket_logging
--- PASS: TestAccObsBucket_logging (30.85s)
=== RUN   TestAccObsBucket_lifecycle
=== PAUSE TestAccObsBucket_lifecycle
=== CONT  TestAccObsBucket_lifecycle
--- PASS: TestAccObsBucket_lifecycle (26.01s)
=== RUN   TestAccObsBucket_website
=== PAUSE TestAccObsBucket_website
=== CONT  TestAccObsBucket_website
--- PASS: TestAccObsBucket_website (25.94s)
=== RUN   TestAccObsBucket_cors
=== PAUSE TestAccObsBucket_cors
=== CONT  TestAccObsBucket_cors
--- PASS: TestAccObsBucket_cors (26.12s)
=== RUN   TestAccObsBucket_notifications
=== PAUSE TestAccObsBucket_notifications
=== CONT  TestAccObsBucket_notifications
--- PASS: TestAccObsBucket_notifications (33.60s)
=== RUN   TestAccObsBucket_pfs
=== PAUSE TestAccObsBucket_pfs
=== CONT  TestAccObsBucket_pfs
--- PASS: TestAccObsBucket_pfs (25.85s)
PASS

Process finished with the exit code 0

[otc-zuul]

Build succeeded.
https://zuul.otc-service.com/t/eco/buildset/e825bf4bd3ec49abaffb60e83b7c9435

✔️ build-otc-releasenotes SUCCESS in 3m 37s
✔️ otc-golangci-lint SUCCESS in 3m 36s
✔️ golang-make-test SUCCESS in 3m 40s
✔️ golang-make-vet SUCCESS in 2m 58s
✔️ tflint SUCCESS in 1m 56s
✔️ goreleaser-build SUCCESS in 8m 39s