Current upstream spec file has tags like

Obsoletes: ipa-server >= 1.0
...
Obsoletes: ipa-client >= 1.0

However, that means that users would not be able to e.g. upgrade freeipa-server 4.1 from our Copr repo with ipa-server 4.2 from official RHEL repo.

We need to set correct Obsoletes and Conflicts in upstream and downstream spec so that:
1. freeipa and ipa packages can be updated, when the version is higher
2. Packages never steps on each other - i.e. ipa and freeipa are never installed at the same time.