How to check the Hyper-V hostname from RHEL VM ?

Issue

• We have a RHEL 6/RHEL7 VM servers hosted in HYPER-V. We need to know the hostname from the VM.
• We host our RHEL 7 instances on Hyper-V. In order to set up the virt-who config with the proper hypervisor, we need a way to find out what Hyper-V hypervisor the RHEL machine is on. How can we determine the Hyper-V hypervisor name from the RHEL VM it is running on ? Note we do have Linux Integration Services installed.