tox.ini: passenv: COVERAGE_*
tox.ini: passenv: COVERAGE_*

This is required to pass through COVERAGE_PROCESS_START etc.

nicoddemus/pytest,alfredodeza/pytest,pfctdayelise/pytest,tomviner/pytest,pytest-dev/pytest,tomviner/pytest,nicoddemus/pytest,txomon/pytest,ddboline/pytest,hackebrot/pytest,Akasurde/pytest,The-Compiler/pytest,The-Compiler/pytest,markshao/pytest,RonnyPfannschmidt/pytest