get rid of s3 resoure and data source

[ShiChangkuo]

What this PR does / why we need it:

Which issue this PR fixes:
(optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged)
fixes #xxx

Special notes for your reviewer:

Release note:

the huaweicloud_s3_* resource and data source have marked as
deprecated since v1.17.0, use huaweicloud_obs_* instead.

PR Checklist

• Tests added/passed.
• Documentation updated.
• Schema updated.

Acceptance Steps Performed

$ make testacc TEST='./huaweicloud' TESTARGS='-run TestAccObsBucket'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./huaweicloud -v -run TestAccObsBucket -timeout 360m -parallel 4
=== RUN   TestAccObsBucketObject_source
=== PAUSE TestAccObsBucketObject_source
=== RUN   TestAccObsBucketObject_content
=== PAUSE TestAccObsBucketObject_content
=== RUN   TestAccObsBucketPolicy_basic
=== PAUSE TestAccObsBucketPolicy_basic
=== RUN   TestAccObsBucketPolicy_update
=== PAUSE TestAccObsBucketPolicy_update
=== RUN   TestAccObsBucketPolicy_s3
=== PAUSE TestAccObsBucketPolicy_s3
=== RUN   TestAccObsBucket_basic
=== PAUSE TestAccObsBucket_basic
=== RUN   TestAccObsBucket_withEpsId
=== PAUSE TestAccObsBucket_withEpsId
=== RUN   TestAccObsBucket_tags
=== PAUSE TestAccObsBucket_tags
=== RUN   TestAccObsBucket_versioning
=== PAUSE TestAccObsBucket_versioning
=== RUN   TestAccObsBucket_logging
=== PAUSE TestAccObsBucket_logging
=== RUN   TestAccObsBucket_quota
=== PAUSE TestAccObsBucket_quota
=== RUN   TestAccObsBucket_lifecycle
=== PAUSE TestAccObsBucket_lifecycle
=== RUN   TestAccObsBucket_website
=== PAUSE TestAccObsBucket_website
=== RUN   TestAccObsBucket_cors
=== PAUSE TestAccObsBucket_cors
=== CONT  TestAccObsBucketObject_source
=== CONT  TestAccObsBucket_versioning
=== CONT  TestAccObsBucketPolicy_s3
=== CONT  TestAccObsBucket_tags
--- PASS: TestAccObsBucket_tags (12.99s)
=== CONT  TestAccObsBucket_withEpsId
    provider_test.go:150: This environment does not support EPS_ID tests
--- SKIP: TestAccObsBucket_withEpsId (0.00s)
=== CONT  TestAccObsBucket_basic
--- PASS: TestAccObsBucketPolicy_s3 (16.78s)
=== CONT  TestAccObsBucket_website
--- PASS: TestAccObsBucketObject_source (22.56s)
=== CONT  TestAccObsBucket_cors
--- PASS: TestAccObsBucket_versioning (24.84s)
=== CONT  TestAccObsBucket_quota
--- PASS: TestAccObsBucket_basic (19.10s)
=== CONT  TestAccObsBucket_lifecycle
--- PASS: TestAccObsBucket_cors (13.81s)
=== CONT  TestAccObsBucketPolicy_basic
--- PASS: TestAccObsBucket_quota (12.88s)
=== CONT  TestAccObsBucketPolicy_update
--- PASS: TestAccObsBucket_website (21.78s)
=== CONT  TestAccObsBucket_logging
--- PASS: TestAccObsBucket_lifecycle (11.95s)
=== CONT  TestAccObsBucketObject_content
--- PASS: TestAccObsBucketPolicy_basic (14.88s)
--- PASS: TestAccObsBucket_logging (19.86s)
--- PASS: TestAccObsBucketPolicy_update (23.21s)
--- PASS: TestAccObsBucketObject_content (22.96s)
PASS
ok      github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud       67.066s