Fix NoneType in create_router.py

It lets Neutron handle str or unicode instead of returning None.
It reverts the first proposal [1] which raises side effects [2].

[1] https://gerrit.opnfv.org/gerrit/#/c/56171/
[2] https://build.opnfv.org/ci/view/functest/job/functest-compass-baremetal-daily-master/126/console

Conflict:
    snaps/openstack/create_router.py

Change-Id: I1b45c7d6118321dd67343f31253f154abae73655
Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>
(cherry picked from commit 9651c889f1b966dc2733daf7eabbb5e62268654d)

1 files changed, 4 insertions, 4 deletions

diff --git a/snaps/openstack/create_router.py b/snaps/openstack/create_router.py
index 260fc03..0b93359 100644
--- a/snaps/openstack/create_router.py
+++ b/snaps/openstack/create_router.py
@@ -149,10 +149,6 @@ class OpenStackRouter(OpenStackNetworkObject):
         :param sub_config:
         :return:
         """
-        if isinstance(sub_config, str):
-            return neutron_utils.get_subnet_by_name(
-                self._neutron, self._keystone,
-                subnet_name=sub_config)
         if isinstance(sub_config, dict):
             sub_dict = sub_config['subnet']
             network = neutron_utils.get_network(
@@ -163,6 +159,10 @@ class OpenStackRouter(OpenStackNetworkObject):
                 return neutron_utils.get_subnet(
                     self._neutron, network,
                     subnet_name=sub_dict['subnet_name'])
+        else:
+            return neutron_utils.get_subnet_by_name(
+                self._neutron, self._keystone,
+                subnet_name=sub_config)
 
     def clean(self):
         """