More Python 3 porting: filter and map, one import

- port away from filter (list comprehension is the suggested way);
- explicitly convert the result of map to a list (thus simulating
  the Python 2 behavior);
- remove the last (newly introduced) relative import;
- add a temporary py35 job to avoid clashes with the future
  official job from project-config.

Python 3 unit tests should pass now.

Story: 2002574
Task: 22141
Change-Id: I73786ed5ca238da1236e6847e25d4435aeebbd87

.zuul.yaml

@@ -1,7 +1,7 @@
 - project:
     check:
       jobs:
-        - openstack-tox-py35:
+        - python-tempestconf-tox-py35:
             voting: false
         - python-tempestconf-tox-cover
         - python-tempestconf-tempest-devstack-admin
@@ -17,6 +17,11 @@
         - python-tempestconf-tempest-packstack-demo
         - tripleo-ci-centos-7-containers-multinode
 
+- job:
+    name: python-tempestconf-tox-py35
+    parent: openstack-tox-py35
+    description: Temporary local job which runs unit tests with py35
+
 - job:
     name: python-tempestconf-tox-cover
     parent: openstack-tox

config_tempest/services/base.py

@@ -91,7 +91,7 @@ class VersionedService(Service):
         for version in body['versions']:
             if version['status'] != "DEPRECATED":
                 versions.append(version)
-        return map(lambda x: x['id'], versions)
+        return list(map(lambda x: x['id'], versions))
 
     def no_port_cut_url(self):
         # if there is no port defined, cut the url from version to the end

config_tempest/services/compute.py

@@ -25,7 +25,7 @@ class ComputeService(VersionedService):
     def set_extensions(self):
         body = self.do_get(self.service_url + '/extensions')
         body = json.loads(body)
-        self.extensions = map(lambda x: x['alias'], body['extensions'])
+        self.extensions = list(map(lambda x: x['alias'], body['extensions']))
 
     def set_versions(self):
         url, top_level = self.no_port_cut_url()

config_tempest/services/identity.py

@@ -40,7 +40,7 @@ class IdentityService(VersionedService):
             body = self.do_get(self.service_url + '/extensions')
             body = json.loads(body)
             values = body['extensions']['values']
-            self.extensions = map(lambda x: x['alias'], values)
+            self.extensions = list(map(lambda x: x['alias'], values))
             return
         # Keystone api changed in v3, the concept of extensions changed. Right
         # now, all the existing extensions are part of keystone core api, so,

config_tempest/services/image.py

@@ -124,8 +124,8 @@ class ImageService(VersionedService):
                 return self.client.show_image(image_id)
             except exceptions.NotFound:
                 pass
-        found = filter(lambda x: x['name'] == image_name,
-                       self.client.list_images()['images'])
+        found = [x for x in self.client.list_images()['images']
+                 if x['name'] == image_name]
         if found:
             return found[0]
         else:

config_tempest/services/network.py

@@ -23,7 +23,7 @@ class NetworkService(VersionedService):
     def set_extensions(self):
         body = self.do_get(self.service_url + '/v2.0/extensions.json')
         body = json.loads(body)
-        self.extensions = map(lambda x: x['alias'], body['extensions'])
+        self.extensions = list(map(lambda x: x['alias'], body['extensions']))
 
     def create_tempest_networks(self, has_neutron, conf, network_id):
         LOG.info("Setting up network")

config_tempest/services/octavia.py

@@ -13,7 +13,7 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
-from base import VersionedService
+from config_tempest.services.base import VersionedService
 
 
 class LoadBalancerService(VersionedService):

config_tempest/services/volume.py

@@ -25,7 +25,7 @@ class VolumeService(VersionedService):
     def set_extensions(self):
         body = self.do_get(self.service_url + '/extensions')
         body = json.loads(body)
-        self.extensions = map(lambda x: x['alias'], body['extensions'])
+        self.extensions = list(map(lambda x: x['alias'], body['extensions']))
 
     def set_versions(self):
         url, top_level = self.no_port_cut_url()