Thanks Alexei for the response.
I see httpd configuration is updated to use oauth. I see below configuration updated in
/etc/httpd/conf.d/internalsso-openidc.conf
<LocationMatch ^/ovirt-engine/api($|/)>
AuthType oauth20
Require valid-user
</LocationMatch>
I dont see any release notes about removal of basic authentication in 4.5.x. So I wanted
to know if this is mentioned anywhere in the documentation.