[OBS]: Fix bucket creation for Swisscloud

[artem-lifshits]

Summary of the Pull Request

PR fixes bucket creation (OBS - Huawei API) on Swisscloud region.

PR Checklist

• Refers to: Storage Class is not supported in eu-ch2 #1886
• Refers to: [OBS] Swiss-Region (eu-ch2) - OBS Bucket creation not possible  #1872
• Schema updated.
• Release notes added.

Acceptance Steps Performed (Passed on both eu-de and eu-ch2)

=== RUN TestAccObsBucket_basic
=== PAUSE TestAccObsBucket_basic
=== CONT TestAccObsBucket_basic
--- PASS: TestAccObsBucket_basic (100.00s)
=== RUN TestAccObsBucket_tags
=== PAUSE TestAccObsBucket_tags
=== CONT TestAccObsBucket_tags
--- PASS: TestAccObsBucket_tags (37.46s)
=== RUN TestAccObsBucket_versioning
=== PAUSE TestAccObsBucket_versioning
=== CONT TestAccObsBucket_versioning
--- PASS: TestAccObsBucket_versioning (70.11s)
=== RUN TestAccObsBucket_logging
=== PAUSE TestAccObsBucket_logging
=== CONT TestAccObsBucket_logging
--- PASS: TestAccObsBucket_logging (45.85s)
=== RUN TestAccObsBucket_lifecycle
=== PAUSE TestAccObsBucket_lifecycle
=== CONT TestAccObsBucket_lifecycle
--- PASS: TestAccObsBucket_lifecycle (39.04s)
=== RUN TestAccObsBucket_website
=== PAUSE TestAccObsBucket_website
=== CONT TestAccObsBucket_website
--- PASS: TestAccObsBucket_website (38.98s)
=== RUN TestAccObsBucket_cors
=== PAUSE TestAccObsBucket_cors
=== CONT TestAccObsBucket_cors
--- PASS: TestAccObsBucket_cors (38.57s)
=== RUN TestAccObsBucket_notifications
=== PAUSE TestAccObsBucket_notifications
=== CONT TestAccObsBucket_notifications
--- PASS: TestAccObsBucket_notifications (49.23s)
PASS

Process finished with the exit code 0

=== RUN TestAccObsBucketPolicyBasic
=== PAUSE TestAccObsBucketPolicyBasic
=== CONT TestAccObsBucketPolicyBasic
--- PASS: TestAccObsBucketPolicyBasic (41.80s)
=== RUN TestAccObsBucketPolicyUpdate
=== PAUSE TestAccObsBucketPolicyUpdate
=== CONT TestAccObsBucketPolicyUpdate
--- PASS: TestAccObsBucketPolicyUpdate (73.73s)
=== RUN TestAccObsBucketPolicyMalformed
=== PAUSE TestAccObsBucketPolicyMalformed
=== CONT TestAccObsBucketPolicyMalformed
--- PASS: TestAccObsBucketPolicyMalformed (82.70s)
PASS

Process finished with the exit code 0

=== RUN TestAccDataSourceObsBucketObject_basic
=== PAUSE TestAccDataSourceObsBucketObject_basic
=== CONT TestAccDataSourceObsBucketObject_basic
--- PASS: TestAccDataSourceObsBucketObject_basic (73.56s)
=== RUN TestAccDataSourceObsBucketObject_readableBody
=== PAUSE TestAccDataSourceObsBucketObject_readableBody
=== CONT TestAccDataSourceObsBucketObject_readableBody
--- PASS: TestAccDataSourceObsBucketObject_readableBody (74.63s)
=== RUN TestAccDataSourceObsBucketObject_allParams
=== PAUSE TestAccDataSourceObsBucketObject_allParams
=== CONT TestAccDataSourceObsBucketObject_allParams
--- PASS: TestAccDataSourceObsBucketObject_allParams (73.66s)
PASS

Process finished with the exit code 0

[otc-zuul]

Build succeeded.
https://zuul.otc-service.com/t/eco/buildset/82597e8f74cd4213a17f8a990fda00e6

✔️ build-otc-releasenotes SUCCESS in 3m 19s
✔️ otc-golangci-lint SUCCESS in 3m 05s
✔️ golang-make-test SUCCESS in 3m 14s
✔️ golang-make-vet SUCCESS in 2m 46s
✔️ tflint SUCCESS in 1m 58s
✔️ goreleaser-build SUCCESS in 8m 23s