GitLab

* [QA] Add error handling

- Standardize test failure handling using the unified 'test_fail' function and 'error_exit' function
Signed-off-by: Linxi Ding <linxid@nvidia.com>

* Add XML log generation for pytest results

- Add `--junitxml` option to pytest command to generate JUnit XML format logs
Signed-off-by: Linxi Ding <linxid@nvidia.com>

* Add $XML_LOG_DIR
Signed-off-by: Linxi Ding <linxid@nvidia.com>

* mkdir
Signed-off-by: Linxi Ding <linxid@nvidia.com>

* Update qa/L0_pytorch_unittest/test.sh
Signed-off-by: Tim Moon <4406448+timmoon10@users.noreply.github.com>

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Signed-off-by: Linxi Ding <linxid@nvidia.com>
Signed-off-by: Tim Moon <4406448+timmoon10@users.noreply.github.com>
Co-authored-by: Tim Moon <4406448+timmoon10@users.noreply.github.com>
Co-authored-by: Kirthi Shankar Sivamani <ksivamani@nvidia.com>