Gets details about a channelShow details from next link. https://docs.aws.amazon.com/ja_jp/cli/latest/reference/medialive/describe-channel.html
| aws medialive describe-channel --channel-id |
| aws sdk go - AWS MediaLive - UnprocessableEntityException: Cannot read property 'destination' of undefined - Stack Overflow : http://stackoverflow.com/questions/48282660/aws-medialive-unprocessableentityexception-cannot-read-property-destination |