RedHat Virtualization Manager dependencies issues on install

Hi,

We are about to evaluate the RedHat virtualisation.

We use a preinstalled RedHat Entreprise Linux 7.6 ( developper ) for testing. This server is also used for our application.

We use the process described here : https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.0/html/installation_guide/chap-installing_red_hat_enterprise_virtualization

On chapter 3.2, on yum install rhvm, we got the following dependencies issues :
Erreur : Paquet : collectd-disk-5.8.0-3.el7.x86_64 (rhel-7-server-rhv-4.2-manager-rpms)
Requiert : collectd(x86-64) = 5.8.0-3.el7
Disponible : collectd-5.8.0-3.el7.x86_64 (rhel-7-server-rhv-4.2-manager-rpms)
collectd(x86-64) = 5.8.0-3.el7
Installation  : collectd-5.8.1-1.el7.x86_64 (epel)
collectd(x86-64) = 5.8.1-1.el7
Erreur : Paquet : collectd-write_http-5.8.0-3.el7.x86_64 (rhel-7-server-rhv-4.2-manager-rpms)
Requiert : collectd(x86-64) = 5.8.0-3.el7
Disponible : collectd-5.8.0-3.el7.x86_64 (rhel-7-server-rhv-4.2-manager-rpms)
collectd(x86-64) = 5.8.0-3.el7
Installation  : collectd-5.8.1-1.el7.x86_64 (epel)
collectd(x86-64) = 5.8.1-1.el7

yum can be configured to try to resolve such errors by temporarily enabling
disabled repos and searching for missing dependencies.
To enable this functionality please set 'notify_only=0' in /etc/yum/pluginconf.d/search-disabled-repos.conf

Erreur : Paquet : collectd-disk-5.8.0-3.el7.x86_64 (rhel-7-server-rhv-4.2-manager-rpms)
Requiert : collectd(x86-64) = 5.8.0-3.el7
Disponible : collectd-5.8.0-3.el7.x86_64 (rhel-7-server-rhv-4.2-manager-rpms)
collectd(x86-64) = 5.8.0-3.el7
Installation  : collectd-5.8.1-1.el7.x86_64 (epel)
collectd(x86-64) = 5.8.1-1.el7
Erreur : Paquet : collectd-write_http-5.8.0-3.el7.x86_64 (rhel-7-server-rhv-4.2-manager-rpms)
Requiert : collectd(x86-64) = 5.8.0-3.el7
Disponible : collectd-5.8.0-3.el7.x86_64 (rhel-7-server-rhv-4.2-manager-rpms)
collectd(x86-64) = 5.8.0-3.el7
Installation  : collectd-5.8.1-1.el7.x86_64 (epel)
collectd(x86-64) = 5.8.1-1.el7

If we passthrougth with the skip-broken option, some package are not well installed and the oVirt engine setup fail due to a SELECT request :

[ ERROR ] Failed to execute stage 'Misc configuration': function getdwhhistorytimekeepingbyvarname(unknown) does not exist
LIGNE 2 : select * from GetDwhHistoryTimekeepingByVarName(

Any ideas ?