Drop support for Ubuntu Xenial

This patch drops ability to check xenial in gates for roles which
still do not use integrated tests. Bionic upgrade check is voting now.

As an addition fixed leap 15.1 vagrant vm name

Depends-On: https://review.opendev.org/671685
Depends-On: https://review.opendev.org/671687
Change-Id: I750907ccdb96569a803b5bdf2f4c3fbc0d56bea4

Vagrantfile

@@ -51,13 +51,8 @@ Vagrant.configure(2) do |config|
     leap150.vm.box = "opensuse/openSUSE-15.0-x86_64"
   end
 
-  config.vm.define "opensuse151" do |leap150|
-    leap150.vm.box = "opensuse/openSUSE-15.1-x86_64"
-  end
-
-  config.vm.define "ubuntu1604" do |xenial|
-    xenial.disksize.size = "40GB"
-    xenial.vm.box = "ubuntu/xenial64"
+  config.vm.define "opensuse151" do |leap151|
+    leap151.vm.box = "opensuse/openSUSE-15.1-x86_64"
   end
 
   config.vm.define "ubuntu1804" do |bionic|

zuul.d/jobs.yaml

@@ -127,28 +127,11 @@
     parent: openstack-ansible-upgrade
     nodeset: ubuntu-bionic
 
-- job:
-    name: openstack-ansible-functional-ubuntu-xenial
-    parent: openstack-ansible-functional
-    nodeset: ubuntu-xenial
-
-- job:
-    name: openstack-ansible-functional-distro_install-ubuntu-xenial
-    parent: openstack-ansible-functional-ubuntu-xenial
-    vars:
-      tox_env: distro_install
-
 - job:
     name: openstack-ansible-functional-distro_install-ubuntu-bionic
     parent: openstack-ansible-functional-ubuntu-bionic
     vars:
       tox_env: distro_install
-
-- job:
-    name: openstack-ansible-upgrade-ubuntu-xenial
-    parent: openstack-ansible-upgrade
-    nodeset: ubuntu-xenial
-
 - job:
     name: openstack-ansible-upgrade-opensuse-15
     parent: openstack-ansible-upgrade
@@ -225,7 +208,7 @@
     description: |
       Run AIO tests for an OpenStack-Ansible project.
       This uses the integrated repository openstack-ansible
-      on Ubuntu Xenial with the scenario ``deploy`` ``aio``.
+      on Ubuntu Bionic with the scenario ``deploy`` ``aio``.
       Any project can then use
       the ``openstack-ansible-integrated-deploy-aio`` job in
       whatever pipeline is appropriate.
@@ -244,9 +227,3 @@
     parent: openstack-ansible-functional-ubuntu-bionic
     vars:
       tox_env: func_py3
-
-- job:
-    name: openstack-ansible-python3-ubuntu-xenial
-    parent: openstack-ansible-functional-ubuntu-xenial
-    vars:
-      tox_env: func_py3

zuul.d/project-templates.yaml

@@ -33,14 +33,11 @@
     check:
       jobs:
         - openstack-ansible-upgrade-centos-7
-        # TODO(mnaser): Make this voting once we release Rocky
-        - openstack-ansible-upgrade-ubuntu-bionic:
-            voting: false
-        - openstack-ansible-upgrade-ubuntu-xenial
+        - openstack-ansible-upgrade-ubuntu-bionic
     gate:
       jobs:
         - openstack-ansible-upgrade-centos-7
-        - openstack-ansible-upgrade-ubuntu-xenial
+          openstack-ansible-upgrade-ubuntu-bionic
     experimental:
       jobs:
         - openstack-ansible-upgrade-opensuse-15