Parameter validation failed, magento:config:set --http-cache-hosts when using hyphens.

[peec]

Version: Magento CLI version 2.0.4

Seems that http cache hosts can not have hyphens, this should be allowed as it's a valid domain name.
WORKS:

bin/magento setup:config:set --http-cache-hosts="hellotest.com"

DOES NOT WORK:

bin/magento setup:config:set --http-cache-hosts="hello-test.com"

Result:

bin/magento setup:config:set --http-cache-hosts="hello-test.com"
Invalid http cache hosts 'hello-test.com'



  [InvalidArgumentException]   
  Parameter validation failed 

Hosting providers such as AWS uses hyphens in EC2 instances, so currently we can not set ec2 dns name which is similar to ec2-xx-xx-xx-xx.eu-west-1.compute.amazonaws.com.

[peec]

Seemes to be fixed in #7f200af39724800c247acee07263703d30fc0f6b , MAGETWO-46858 . Closing