Revert "Revert "Re-enable test run SLS""

This reverts commit fcfa1a244e2b04369d87112c729ce8dda742a979 and
re-enables tests in jenkins.py. They had been left commented out while I
was testing.
Merge pull request #15725 from terminalmage/re-enable-tests

Revert "Revert "Re-enable test run SLS""