The live restore testbed program, test_live_restore has grown rapidly to the point where it needs:

• Real options parsing.
• Internal looping, effectively throwing away the iteration script
• A smoke.sh script that runs a variety of test scenarios in order

The following options should be passable:

• Thread count for background thread
• Op count for CRUD ops
• Fresh start
• Background thread debug mode
• Iteration count

Any other obvious options would be good too.