This issue is solved! Thanks for your input Nick. And special thanks to Ben Chambers. He debugged the ClearOS Linode script with me. I have highlighted the change to the script below. So, to spin up ClearOS 7.x on Linode:

Create a Centos 7 server. Don't do any updates to the basic install.
Execute the ClearOS 7 StackScript with the modification noted below. The script is on the Linode StackScript site and the entire script is present in this discussion. Ben will update that script to add the second 'yum --enablerepo=* clean all' once he gets authorization to make the change.
I executed the lines in the script line by line just to be sure they worked. I did not do the default networking lines, skipping to and executing the two sed lines and the rest of the script.
You can then log in to the ClearOS 7 server on your assigned IP address:81 and complete the setup just like you would on a physical server install.

Got to say that for $10.00 a month this seems like a great way to run ClearOS. Particularly if you spend time in an RV tooling around the country and don't want to task your grandchildren with rebooting your server after a power failure.

Thanks again everyone....

*** Change required to current StackScript on Linode for ClearOS 7: