chore(CCM): refactor CCM certificate push resource

[deer-hang]

What this PR does / why we need it:

refactor CCM certificate push resource.

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.

go test -v -coverprofile=coverage_1724407894813_TestAccCcmCertificatePush_.cov -coverpkg=./huaweicloud/services/ccm ./huaweicloud/services/acceptance/ccm -run TestAccCcmCertificatePush_ -timeout 360m -parallel 4
=== RUN   TestAccCcmCertificatePush_elb
=== PAUSE TestAccCcmCertificatePush_elb
=== RUN   TestAccCcmCertificatePush_waf
=== PAUSE TestAccCcmCertificatePush_waf
=== CONT  TestAccCcmCertificatePush_elb
=== CONT  TestAccCcmCertificatePush_waf
--- PASS: TestAccCcmCertificatePush_waf (26.51s)
--- PASS: TestAccCcmCertificatePush_elb (59.30s)
PASS
coverage: 14.8% of statements in ./huaweicloud/services/ccm
ok      github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance/ccm       59.362s coverage: 14.8% of statements in ./huaweicloud/services/ccm
root@ecs-luxiaohang:/mnt/d/Project/Golang/terraform-provider-huaweicloud# go tool cover -html=coverage_1724407894813_TestAccCcmCertificatePush_.cov -o coverage_1724407894813_TestAccCcmCertificatePush_.cov.html

• Documentation updated.

• Schema updated.

• CheckDeleted.

  • a. During query operation (Read Context)
    aa. Resource not found
    
    ab. Related resources (parent resources) not found
    >>>>>> Paste the screenshot here <<<<<<
    -->

  • b. During delete/disassociate/unbind operation (Delete Context)
    ba. Resource not found
    >>>>>> Paste the screenshot here <<<<<<

[github-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This PR has been approved by: @deer-hang

[deer-hang]

make testacc TEST='./huaweicloud/services/acceptance/ccm' TESTARGS='-run TestAccCcmCertificatePush_'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./huaweicloud/services/acceptance/ccm -v -run TestAccCcmCertificatePush_ -timeout 360m -parallel 4
=== RUN   TestAccCcmCertificatePush_elb
=== PAUSE TestAccCcmCertificatePush_elb
=== RUN   TestAccCcmCertificatePush_waf
=== PAUSE TestAccCcmCertificatePush_waf
=== CONT  TestAccCcmCertificatePush_elb
=== CONT  TestAccCcmCertificatePush_waf
--- PASS: TestAccCcmCertificatePush_waf (25.77s)
--- PASS: TestAccCcmCertificatePush_elb (59.57s)
PASS
ok      github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance/ccm       59.622s

[jinyangyang222]

/lgtm