Added another package-scoped fixture test. Changed existing complex tests to use package fixtures.
Added another package-scoped fixture test.
Changed existing complex tests to use package fixtures.

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