tools: Stop shipping firewall service file with recent firewalld
tools: Stop shipping firewall service file with recent firewalld

firewalld 0.6 includes cockpit's firewall service, so that the default
firewall configuration can open cockpit's port.

To avoid a file conflict between the packages, stop shipping our
firewalld service file on Fedora ≥ 29 and RHEL ≥ 8. Set the "Conflicts:"
to ensure that either cockpit or firewalld ship cockpit.xml; in
particular, disallow running a newer cockpit-ws without cockpit.xml
with an older firewalld that does not yet ship cockpit.xml yet.

https://bugzilla.redhat.com/show_bug.cgi?id=1609393

Closes #9766

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