Tox 4.0.0 was recently released and it has several breaking changes.
We pin to < 4.0.0 here. We are planning to move forward only on the
master charm branches.
Tox is also pinned to < 4.0.0 for stable branches in upstream
openstack-zuul-jobs as well as in zosci-config. However, the
requires= section in the charm's tox.ini file ends up installing
tox>4, wiping out the zuul-pinned tox<4 that was already installed
installed. This patch fixes that.
The build.lock branch points to master which means that the layer is not
locked. Lock the layers to the commit hash instead; this ensures
reproducible builds as much as possible.
* requests 2.26 just dropped py35 and requests 2.26 just got into the
build stable. Thus pin it for release.
* Pin cffi 1.14.6 in requirements.txt used in charm build
for py35 compatability.
* use stable/21.10 libraries
* use zaza/zaza-openstack-tests at stable/21.10
* build.lock files for reactive charms
* bundles refer to ~openstack-charms candidate channel
