refactor(eg/channel): deprecate the channel_id filter and refactor the resource codes

[Lance52259]

What this PR does / why we need it:
The API document has offline the channel_id parameter, so, we mark it as deprecated and remove it from the markdown file definition.

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:

1. deprecate the channel_id filter

PR Checklist

• Tests added/passed.

make testacc TEST='./huaweicloud/services/acceptance/eg' TESTARGS='-run=TestAccDataCustomEventChannels_filterById'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./huaweicloud/services/acceptance/eg -v -run=TestAccDataCustomEventChannels_filterById -timeout 360m -parallel 4
=== RUN   TestAccDataCustomEventChannels_filterById
=== PAUSE TestAccDataCustomEventChannels_filterById
=== CONT  TestAccDataCustomEventChannels_filterById
--- PASS: TestAccDataCustomEventChannels_filterById (37.01s)
PASS
ok      github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance/eg        37.113s

• Documentation updated.

• Schema updated.

• CheckDeleted.

  • a. During query operation (Read Context)
    aa. Resource 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: @Lance52259

[Lance52259]

make testacc TEST='./huaweicloud/services/acceptance/eg' TESTARGS='-run=TestAccDataCustomEventChannels_'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./huaweicloud/services/acceptance/eg -v -run=TestAccDataCustomEventChannels_ -timeout 360m -parallel 4
=== RUN TestAccDataCustomEventChannels_basic
=== PAUSE TestAccDataCustomEventChannels_basic
=== RUN TestAccDataCustomEventChannels_filterById
=== PAUSE TestAccDataCustomEventChannels_filterById
=== RUN TestAccDataCustomEventChannels_filterByEpsId
=== PAUSE TestAccDataCustomEventChannels_filterByEpsId
=== CONT TestAccDataCustomEventChannels_basic
=== CONT TestAccDataCustomEventChannels_filterByEpsId
=== CONT TestAccDataCustomEventChannels_filterById
--- PASS: TestAccDataCustomEventChannels_filterByEpsId (51.88s)
--- PASS: TestAccDataCustomEventChannels_filterById (59.43s)
--- PASS: TestAccDataCustomEventChannels_basic (61.23s)
PASS
ok github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance/eg 61.301s

[Lance52259]

[Lance52259]

../coverage.sh -o eg -f TestAccDataCustomEventChannels
Prepare to calculate the coverage the following command:
TF_ACC=1 go test "./huaweicloud/services/acceptance/eg" -v -coverprofile="./huaweicloud/services/acceptance/eg_coverage.cov" -coverpkg="./huaweicloud/services/eg" -run TestAccDataCustomEventChannels -timeout 360m -parallel 10
=== RUN   TestAccDataCustomEventChannels_basic
=== PAUSE TestAccDataCustomEventChannels_basic
=== RUN   TestAccDataCustomEventChannels_filterById
=== PAUSE TestAccDataCustomEventChannels_filterById
=== RUN   TestAccDataCustomEventChannels_filterByEpsId
=== PAUSE TestAccDataCustomEventChannels_filterByEpsId
=== CONT  TestAccDataCustomEventChannels_basic
=== CONT  TestAccDataCustomEventChannels_filterByEpsId
=== CONT  TestAccDataCustomEventChannels_filterById
--- PASS: TestAccDataCustomEventChannels_filterByEpsId (53.64s)
--- PASS: TestAccDataCustomEventChannels_filterById (58.65s)
--- PASS: TestAccDataCustomEventChannels_basic (60.52s)
PASS
coverage: 13.1% of statements in ./huaweicloud/services/eg
ok      github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance/eg        60.585s coverage: 13.1% of statements in ./huaweicloud/services/eg

[deer-hang]

/lgtm