.coveragerc: ignore test coverage for zpmlib/tests
.coveragerc: ignore test coverage for zpmlib/tests

The test code in zpmlib/tests should not be included in the collection
of test coverage metrics.

zerovm/zerovm-cli,zerovm/zerovm-cli,zerovm/zerovm-cli,zerovm/zerovm-cli,zerovm/zerovm-cli,zerovm/zerovm-cli