[Enabler][Portability] [zos_fetch] Ensure test suite portability by removing hard coded data.

[fernandofloresg]

Enabler description

This issue is tracked by epic: [Epic][Portability] Ensure test suite execution portability & parallelism.

Issue:

In order to ensure test portability and parallel execution we need to remove data set names and user names that are hardcoded. In this test the following needs to be removed:

• [ ] Test test_fetch_use_data_set_qualifier uses a hardcoded HLQ, it should be done dynamically.

Ansible module

zos_fetch