bots: Install sssd-dbus on RHEL/CentOS images
bots: Install sssd-dbus on RHEL/CentOS images

This will be used for TLS certificate → user mapping:
https://www.freeipa.org/page/V4/User_Certificates

Similiar to what commit 5391ba5 did on the Fedora images.

Closes #11423

deryni/cockpit,mvollmer/cockpit,garrett/cockpit,cockpit-project/cockpit,moraleslazaro/cockpit,garrett/cockpit,cockpit-project/cockpit,cockpit-project/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,martinpitt/cockpit,martinpitt/cockpit,garrett/cockpit,moraleslazaro/cockpit,martinpitt/cockpit,garrett/cockpit,cockpituous/cockpit,moraleslazaro/cockpit,deryni/cockpit,cockpit-project/cockpit,deryni/cockpit,cockpituous/cockpit,martinpitt/cockpit,cockpituous/cockpit,cockpituous/cockpit,deryni/cockpit,moraleslazaro/cockpit,deryni/cockpit,cockpituous/cockpit,mvollmer/cockpit,mvollmer/cockpit,garrett/cockpit,deryni/cockpit,moraleslazaro/cockpit,cockpituous/cockpit,deryni/cockpit,moraleslazaro/cockpit,mvollmer/cockpit,cockpit-project/cockpit,mvollmer/cockpit