Added the missing RPM packages - python-virtualenv and python-devel for rgw_s3tests.yaml.

Description

Please include Automation development guidelines. Source of Test case - New Feature/Regression Test/Close loop of customer BZs

Checklist:

[ ] Create a test case in Polarion reviewed and approved.
[ ] Create a design/automation approach doc. Optional for tests with similar tests already automated.
[ ] Review the automation design
[ ] Implement the test script and perform test runs
[ ] Submit PR for code review and approve
[ ] Update Polarin Test with Automation script details and update automation fields
[ ] If automation is part of Close loop, update BZ flag qe-test_coverage “+” and link Polarion test