feat(CDN): cdn domain support new resource to manage cache refresh

[deer-hang]

What this PR does / why we need it:

cdn domain support new resource to manage cache refresh

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:

PR Checklist

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

Acceptance Steps Performed

make testacc TEST='./huaweicloud/services/acceptance/cdn' TESTARGS='-run TestAccCacheRefresh_basic'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./huaweicloud/services/acceptance/cdn -v -run TestAccCacheRefresh_basic -timeout 360m -parallel 4
=== RUN   TestAccCacheRefresh_basic
=== PAUSE TestAccCacheRefresh_basic
=== CONT  TestAccCacheRefresh_basic
--- PASS: TestAccCacheRefresh_basic (11.09s)
PASS
ok      github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance/cdn       11.128s

[github-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This PR has been approved by: @deer-hang

[deer-hang]

make testacc TEST='./huaweicloud/services/acceptance/cdn' TESTARGS='-run TestAccCacheRefresh_basic'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./huaweicloud/services/acceptance/cdn -v -run TestAccCacheRefresh_basic -timeout 360m -parallel 4
=== RUN   TestAccCacheRefresh_basic
=== PAUSE TestAccCacheRefresh_basic
=== CONT  TestAccCacheRefresh_basic
--- PASS: TestAccCacheRefresh_basic (10.46s)
PASS
ok      github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance/cdn       10.508s

[jinyangyang222]

/lgtm