Sync release-tools

Sync release-tools boilerplate containing these changes
in order to pin pip < 20.3:
https://github.com/openstack-charmers/release-tools/pull/125
https://github.com/openstack-charmers/release-tools/pull/126

Change-Id: I9f52fe90d44a95446d8a005d6cb1c98ea73a70e0

requirements.txt

@@ -7,11 +7,13 @@
 #       requirements.  They are intertwined.  Also, Zaza itself should specify
 #       all of its own requirements and if it doesn't, fix it there.
 #
-setuptools<50.0.0  # https://github.com/pypa/setuptools/commit/04e3df22df840c6bb244e9b27bc56750c44b7c85
 pbr>=1.8.0,<1.9.0
 simplejson>=2.2.0
 netifaces>=0.10.4
-netaddr>=0.7.12,!=0.7.16
+
+# Strange import error with newer netaddr:
+netaddr>0.7.16,<0.8.0
+
 Jinja2>=2.6  # BSD License (3 clause)
 six>=1.9.0
 

test-requirements.txt

@@ -9,11 +9,42 @@
 #
 setuptools<50.0.0  # https://github.com/pypa/setuptools/commit/04e3df22df840c6bb244e9b27bc56750c44b7c85
 charm-tools>=2.4.4
+
+# Workaround until https://github.com/juju/charm-tools/pull/589 gets
+# published
+keyring<21
+
 requests>=2.18.4
-mock>=1.2
+
+# Newer mock seems to have some syntax which is newer than python3.5 (e.g.
+# f'{something}'
+mock>=1.2,<4.0.0; python_version < '3.6'
+mock>=1.2; python_version >= '3.6'
+
 flake8>=2.2.4
 stestr>=2.2.0
+
+# Dependency of stestr. Workaround for
+# https://github.com/mtreinish/stestr/issues/145
+cliff<3.0.0
+
+# Dependencies of stestr. Newer versions use keywords that didn't exist in
+# python 3.5 yet (e.g. "ModuleNotFoundError")
+importlib-metadata<3.0.0; python_version < '3.6'
+importlib-resources<3.0.0; python_version < '3.6'
+
+# Some Zuul nodes sometimes pull newer versions of these dependencies which
+# dropped support for python 3.5:
+osprofiler<2.7.0;python_version<'3.6'
+stevedore<1.31.0;python_version<'3.6'
+
 coverage>=4.5.2
 pyudev              # for ceph-* charm unit tests (need to fix the ceph-* charm unit tests/mocking)
 git+https://github.com/openstack-charmers/zaza.git#egg=zaza;python_version>='3.0'
 git+https://github.com/openstack-charmers/zaza-openstack-tests.git#egg=zaza.openstack
+
+# Needed for charm-glance:
+git+https://opendev.org/openstack/tempest.git#egg=tempest;python_version>='3.6'
+tempest<24.0.0;python_version<'3.6'
+
+croniter            # needed for charm-rabbitmq-server unit tests

tox.ini

@@ -14,6 +14,18 @@ skipsdist = True
 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
+# NOTE: https://wiki.canonical.com/engineering/OpenStack/InstallLatestToxOnOsci
+minversion = 3.2.0
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}