tests: tox: python version matrix is fed from .cirrus.yml via TOXENV
tests: tox: python version matrix is fed from .cirrus.yml via TOXENV

pooler/electrum-ltc,pooler/electrum-ltc,pooler/electrum-ltc,pooler/electrum-ltc,spesmilo/electrum,spesmilo/electrum,spesmilo/electrum,spesmilo/electrum,wakiyamap/electrum-mona,wakiyamap/electrum-mona,wakiyamap/electrum-mona,wakiyamap/electrum-mona