This task is to make the following enhancements to the SST test suites:

• Reduce the running time of the SST reliability tests to a level acceptable for running after each change.
• Add progress markers to the SST reliability tests.
• Refactor duplicated thread management code in the non-secure SST tests into an interface.
• Split overloaded SST tests into multiple smaller tests, and add some missing ones.
• Move the SST policy test suite to the non-secure side and then re-enable it.