unit-test-long failed on ! Ubuntu 18.04

Host: ec2-3-93-240-206.compute-1.amazonaws.com
Project: WiredTiger (develop)
Commit: diff: WT-8032 Add failpoints to the history store update insert path (#6968)

• Creating generic failpoint function that uses timing stress configuration.
• Passing the reconciliation state into hs_insert_updates.
• Adding the failpoints to test format.
• Adding failpoint configuration to test checkpoint. Updating smoke sh in test checkpoint.
• Fixing issue in test format where timing stress configuration wasn't being persisted. | 03 Sep 21 07:42 UTC
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