Add xena bundles

- add non-voting impish
- drop groovy bundle
- rebuild to pick up charm-helpers changes
- update tox/pip.sh to ensure setuptools<50.0.0

Note that this charm doesn't require interim OpenStack releases (e.g.
focal-ussuri, -xena, -victoria) as it isn't based on OpenStack releases.
The ovn-chassis charm doesn't have a source or openstack-origin.  The
bionic-train and bionic-ussuri jobs are retained for historical
perspectives as they specify a PPA for the magpie charm in those
bundles.

Change-Id: I9840db1b88781d074dfbce8db875f458e5fd090a

osci.yaml

@@ -3,12 +3,12 @@
       - charm-unit-jobs
     check:
       jobs:
-      - charm-build
-      - bionic-ussuri
       - bionic-train
+      - bionic-ussuri
       - focal
-      - groovy
       - hirsute
+      - impish:
+          voting: false
     vars:
       needs_charm_build: true
       charm_build_name: ovn-chassis

pip.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+#
+# This file is managed centrally by release-tools and should not be modified
+# within individual charm repos.  See the 'global' dir contents for available
+# choices of tox.ini for OpenStack Charms:
+#     https://github.com/openstack-charmers/release-tools
+#
+# setuptools 58.0 dropped the support for use_2to3=true which is needed to
+# install blessings (an indirect dependency of charm-tools).
+#
+# More details on the beahvior of tox and virtualenv creation can be found at
+# https://github.com/tox-dev/tox/issues/448
+#
+# This script is wrapper to force the use of the pinned versions early in the
+# process when the virtualenv was created and upgraded before installing the
+# depedencies declared in the target.
+pip install 'pip<20.3' 'setuptools<50.0.0'
+pip "$@"

rebuild

@@ -2,4 +2,4 @@
 # when dependencies of the charm change,
 # but nothing in the charm needs to.
 # simply change the uuid to something new
-445369d3-d575-4fb0-8524-c82cab1188de
+53ee5d0c-1178-11ec-8cae-235e88e2da01

src/tests/bundles/impish.yaml

@@ -1,7 +1,7 @@
 variables:
   openstack-origin: &openstack-origin distro
 
-series: groovy
+series: impish
 
 comment:
 - 'machines section to decide order of deployment. database sooner = faster'

src/tests/tests.yaml

@@ -1,16 +1,16 @@
 charm_name: ovn-chassis
 
 gate_bundles:
-- bionic-ussuri
 - bionic-train
+- bionic-ussuri
 - focal
-- groovy
 
 smoke_bundles:
 - focal
 
 dev_bundles:
 - hirsute
+- impish
 
 target_deploy_status:
   magpie:
@@ -39,4 +39,5 @@ tests:
 
 tests_options:
   force_deploy:
-    - hirsute
+    - hirsute  # as nrpe is deployed, and nrpe only supports LTS releases
+    - impish   # as nrpe is deployed, and nrpe only supports LTS releases

src/tox.ini

@@ -22,12 +22,12 @@ skip_missing_interpreters = False
 requires = pip < 20.3
            virtualenv < 20.0
 # NOTE: https://wiki.canonical.com/engineering/OpenStack/InstallLatestToxOnOsci
-minversion = 3.2.0
+minversion = 3.18.0
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
          PYTHONHASHSEED=0
-whitelist_externals = juju
+allowlist_externals = juju
 passenv = HOME TERM CS_* OS_* TEST_*
 deps = -r{toxinidir}/test-requirements.txt
 install_command =

tox.ini

@@ -11,6 +11,21 @@ envlist = pep8,py3
 sitepackages = False
 # NOTE: Avoid false positives by not skipping missing interpreters.
 skip_missing_interpreters = False
+# NOTES:
+# * We avoid the new dependency resolver by pinning pip < 20.3, see
+#   https://github.com/pypa/pip/issues/9187
+# * Pinning dependencies requires tox >= 3.2.0, see
+#   https://tox.readthedocs.io/en/latest/config.html#conf-requires
+# * It is also necessary to pin virtualenv as a newer virtualenv would still
+#   lead to fetching the latest pip in the func* tox targets, see
+#   https://stackoverflow.com/a/38133283
+requires =
+  pip < 20.3
+  virtualenv < 20.0
+  setuptools<50.0.0
+
+# NOTE: https://wiki.canonical.com/engineering/OpenStack/InstallLatestToxOnOsci
+minversion = 3.18.0
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
@@ -21,7 +36,7 @@ setenv = VIRTUAL_ENV={envdir}
          JUJU_REPOSITORY={toxinidir}/build
 passenv = http_proxy https_proxy INTERFACE_PATH LAYER_PATH JUJU_REPOSITORY
 install_command =
-  pip install {opts} {packages}
+  {toxinidir}/pip.sh install {opts} {packages}
 deps =
     -r{toxinidir}/requirements.txt