A lot of things have changed at once (or have been ignored
in refstack for some time) and in order to keep refstack
functioning this commit addressed the following:
* Update nodejs jobs so that we keep testing refstack
with the newest nodejs
* Update jobs for Zed development cycle
* Add support for py3.10
* Fix 2009327 story - refstack is now compatible with
jsonschema>=3.2.0 (schema definition got fixed)
* Drop py3.6 and 3.7 (upstream tooling as e.g. devstack
isn't supporting those anymore)
* Fix mysql setup script used to run functional unit tests
* Add WebTest dependency needed by unit tests
* Update alembic and jsonschema version to at least
currently recomended versions (by constraints)
Task: 43761
Story: 2009327
Change-Id: I37bb7dc520119bdab280d62e23922641ef7658ce
334dd378c9