fix used-before-assignment errors where pylint cannot infer logic
install/tools/ipa-csreplica-manage:471: [E0601(used-before-assignment), main] Using variable 'replica1' before assignment)
install/tools/ipa-csreplica-manage:471: [E0601(used-before-assignment), main] Using variable 'replica2' before assignment)
install/tools/ipa-replica-manage:1598: [E0601(used-before-assignment), main] Using variable 'replica1' before assignment)
install/tools/ipa-replica-manage:1598: [E0601(used-before-assignment), main] Using variable 'replica2' before assignment)
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>