.coveragerc: use globs with includes
.coveragerc: use globs with includes

Apparently this caused missing coverage with pdb/pexpect tests.

nicoddemus/pytest,RonnyPfannschmidt/pytest,markshao/pytest,Akasurde/pytest,The-Compiler/pytest,alfredodeza/pytest,nicoddemus/pytest,tomviner/pytest,pytest-dev/pytest,The-Compiler/pytest,tomviner/pytest