Fix Gnocchi py35 gate

This change allows to run custom tox target on ubuntu xenial

The Gnocchi jobs run some py35 jobs that are currently running on
trusty. But because it lacks of python3.5 we move them to xenial.

This fixes this Gnocchi gate issue:
http://logs.openstack.org/06/341606/5/check/gate-gnocchi-tox-db-py35-mysql/efda919/

Change-Id: I682b92a6baea6222d4e717b695f44c6ce8ff543e

jenkins/jobs/projects.yaml

@@ -2669,6 +2669,9 @@
             - py27-postgresql
             - py34-mysql
             - py34-postgresql
+      - gate-{name}-tox-db-{envlist}-{node}:
+          node: ubuntu-xenial
+          envlist:
             - py35-mysql
             - py35-postgresql
       - pypi-jobs

jenkins/jobs/python-jobs.yaml

@@ -437,6 +437,37 @@
       - test-results
       - console-log
 
+- job-template:
+    name: 'gate-{name}-tox-db-{envlist}-{node}'
+    description: 'Same job as gate-{name}-tox-db-{envlist} but on node {node}'
+    node: '{node}'
+
+    wrappers:
+      - build-timeout:
+          timeout: 40
+      - timestamps
+
+    builders:
+      - print-template-name:
+          template-name: "{template-name}"
+      - zuul-git-prep-upper-constraints
+      - install-distro-packages
+      - mysql-prep
+      - pgsql-prep
+      - mysql-db:
+          db_name: openstack_citest
+      - pgsql-db:
+          db_name: openstack_citest
+      - revoke-sudo
+      - tox:
+          envlist: '{envlist}'
+      - assert-no-extra-files
+
+    publishers:
+      - test-results
+      - console-log
+
+
 - job-template:
     name: '{name}-tarball'
     node: ubuntu-trusty

zuul/layout.yaml

@@ -7121,8 +7121,8 @@ projects:
       - gate-gnocchi-tox-db-py27-postgresql
       - gate-gnocchi-tox-db-py34-mysql
       - gate-gnocchi-tox-db-py34-postgresql
-      - gate-gnocchi-tox-db-py35-mysql
-      - gate-gnocchi-tox-db-py35-postgresql
+      - gate-gnocchi-tox-db-py35-mysql-ubuntu-xenial
+      - gate-gnocchi-tox-db-py35-postgresql-ubuntu-xenial
       - gate-gnocchi-bashate
       - gate-gnocchi-dsvm-functional-file-mysql
       - gate-gnocchi-dsvm-functional-swift-postgresql
@@ -7141,8 +7141,8 @@ projects:
       - gate-gnocchi-tox-db-py27-postgresql
       - gate-gnocchi-tox-db-py34-mysql
       - gate-gnocchi-tox-db-py34-postgresql
-      - gate-gnocchi-tox-db-py35-mysql
-      - gate-gnocchi-tox-db-py35-postgresql
+      - gate-gnocchi-tox-db-py35-mysql-ubuntu-xenial
+      - gate-gnocchi-tox-db-py35-postgresql-ubuntu-xenial
       - gate-gnocchi-bashate
       - gate-gnocchi-dsvm-functional-file-mysql
       - gate-gnocchi-dsvm-functional-swift-postgresql