Description of problem:

Red Hat Enterprise Linux ComputeNode release 7.6 (Maipo) OS also recognized as RedHat 7.6 Operating System. It should create a new operating system for RHEL ComputeNode 7.6.

Version-Release number of selected component (if applicable):

Satellite 6.4 Server
Red Hat Enterprise Linux ComputeNode release 7.6 (Maipo)

How reproducible: Yes

Steps to Reproduce:

1. Remove "RedHat 7.6" Operating system from "Hosts > Operating Systems".
2. Then Run "puppet agent -tv" on the "Red Hat Enterprise Linux ComputeNode release 7.6 (Maipo" Host.
3. It attaches RedHat 7.6 to "Red Hat Enterprise Linux ComputeNode release 7.6 (Maipo" in spite of creating a new operating system for the RHEL Compute Node.