add aws_media_packagev2_channel resource

[mattyboy84]

Description

Adds the aws_media_packagev2_channel resource which creates an AWS Elemental Media Package V2 Channel within a Channel Group

Output from Acceptance Testing

=== RUN   TestAccMediaPackageV2_serial
=== PAUSE TestAccMediaPackageV2_serial
=== CONT  TestAccMediaPackageV2_serial
=== RUN   TestAccMediaPackageV2_serial/Channel     
=== RUN   TestAccMediaPackageV2_serial/Channel/cmaf
=== RUN   TestAccMediaPackageV2_serial/Channel/description
=== RUN   TestAccMediaPackageV2_serial/Channel/disappears
=== RUN   TestAccMediaPackageV2_serial/Channel/tags
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_nullNonOverlappingResourceTag
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/ComputedTag_OnUpdate_Add
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/IgnoreTags_Overlap_ResourceTag
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/basic
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/EmptyTag_OnUpdate_Replace
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/IgnoreTags_Overlap_DefaultTag
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/null
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_providerOnly
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_updateToProviderOnly
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_updateToResourceOnly
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_nullOverlappingResourceTag
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_emptyResourceTag
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/ComputedTag_OnCreate
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/EmptyMap
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/AddOnUpdate
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/EmptyTag_OnCreate
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/EmptyTag_OnUpdate_Add
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_nonOverlapping
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_overlapping
=== RUN   TestAccMediaPackageV2_serial/Channel/tags/ComputedTag_OnUpdate_Replace
=== RUN   TestAccMediaPackageV2_serial/Channel/basic
--- PASS: TestAccMediaPackageV2_serial (819.31s)
    --- PASS: TestAccMediaPackageV2_serial/Channel (819.31s)
        --- PASS: TestAccMediaPackageV2_serial/Channel/cmaf (29.24s)
        --- PASS: TestAccMediaPackageV2_serial/Channel/description (28.74s)
        --- PASS: TestAccMediaPackageV2_serial/Channel/disappears (15.95s)
        --- PASS: TestAccMediaPackageV2_serial/Channel/tags (727.21s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_nullNonOverlappingResourceTag (20.00s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/ComputedTag_OnUpdate_Add (35.70s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/IgnoreTags_Overlap_ResourceTag (44.60s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/basic (68.28s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/EmptyTag_OnUpdate_Replace (32.12s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/IgnoreTags_Overlap_DefaultTag (40.65s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/null (19.83s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_providerOnly (67.48s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_updateToProviderOnly (31.91s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_updateToResourceOnly (30.23s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_nullOverlappingResourceTag (19.71s)   
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_emptyResourceTag (19.72s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/ComputedTag_OnCreate (22.55s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/EmptyMap (19.23s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/AddOnUpdate (31.58s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/EmptyTag_OnCreate (35.14s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/EmptyTag_OnUpdate_Add (47.95s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_nonOverlapping (51.57s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/DefaultTags_overlapping (53.29s)
            --- PASS: TestAccMediaPackageV2_serial/Channel/tags/ComputedTag_OnUpdate_Replace (35.66s)
        --- PASS: TestAccMediaPackageV2_serial/Channel/basic (18.17s)
PASS
ok      github.com/hashicorp/terraform-provider-aws/internal/service/mediapackagev2     819.566s

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