tui: don't hide NIC selection when there is only one

Making things visible is good (esp. here it allows to check interface
details), and having the test at this level would not allow to implement
xenserver#8.

Signed-off-by: Yann Dirson <[email protected]>

Author: ydirson

tui/installer/__init__.py

@@ -46,8 +46,6 @@ def upgrade_but_no_settings_predicate(answers):
             ('installation-to-overwrite' not in answers or \
                  not answers['installation-to-overwrite'].settingsAvailable())
 
-    has_multiple_nics = lambda a: len(a['network-hardware'].keys()) > 1
-
     is_reinstall_fn = lambda a: a['install-type'] == constants.INSTALL_TYPE_REINSTALL
     is_clean_install_fn = lambda a: a['install-type'] == constants.INSTALL_TYPE_FRESH
     is_not_restore_fn = lambda a: a['install-type'] != constants.INSTALL_TYPE_RESTORE
@@ -162,7 +160,7 @@ def out_of_order_pool_upgrade_fn(answers):
         Step(uis.get_root_password,
              predicates=[is_not_restore_fn, not_preserve_settings]),
         Step(uis.get_admin_interface,
-             predicates=[is_not_restore_fn, has_multiple_nics, not_preserve_settings]),
+             predicates=[is_not_restore_fn, not_preserve_settings]),
         Step(uis.get_admin_interface_configuration,
              predicates=[is_not_restore_fn, not_preserve_settings]),
         Step(uis.get_name_service_configuration,