Support different variant Red Hat Enterprise Linux distro name in /etc/os-release
@@ -1133,6 +1133,7 @@ def is_vm_supported_for_extension(operation):
this VM extension. All other distros will get error code 51
"""
supported_dists = {'redhat' : ['7', '8'], # Rhel
+ 'rhel' : ['7', '8'], # Rhel
'centos' : ['7', '8'], # CentOS
'red hat' : ['7', '8'], # Oracle, RHEL
'oracle' : ['7', '8'], # Oracle
