Prepare spec file for Fedora 18
FreeIPA 3.0 is being released to Fedora 18 only. Since we only support
Fedora 17 and Fedora 18 in FreeIPA 3.0+, compatibility code for older
Fedoras can be dropped. This should clean up the spec file and make it
more readable.
Dogtag10 Requires were fixed. Without this patch, there is a conflict
on dogtag-pki-common-theme.
Tar requirement was added to avoid crashes in ipa-replica-prepare on
some minimal Fedora composes.
https://fedorahosted.org/freeipa/ticket/2748
https://fedorahosted.org/freeipa/ticket/3237