Added pyusb as a dependency

https://fedorahosted.org/freeipa/ticket/5886

Reviewed-By: Martin Basti <mbasti@redhat.com>

freeipa.spec.in

@@ -505,6 +505,7 @@ Requires: python-requests
 Requires: python-custodia
 Requires: python-dns >= 1.11.1
 Requires: python-netifaces >= 0.10.4
+Requires: pyusb
 
 Conflicts: %{alt_name}-python < %{version}
 
@@ -553,6 +554,7 @@ Requires: python3-custodia
 Requires: python3-requests
 Requires: python3-dns >= 1.11.1
 Requires: python3-netifaces >= 0.10.4
+Requires: python3-pyusb
 
 %description -n python3-ipalib
 IPA is an integrated solution to provide centrally managed Identity (users,