tools: Enable iSCSI on rhel-x
tools: Enable iSCSI on rhel-x

This was hidden in our CI as that hack didn't apply to Fedora builds,
and we build the rhel-x rpms on Fedora 28.

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