The wiredtiger live restore configuration options are a bit repetitive. An example configuration file using them could look like:

 replication:
   replSetName: rs1
storage:
   dbPath: new_db/
   wiredTiger:
  	engineConfig:
           wiredTigerLiveRestoreSource: /home/ec2-user/mount_point/data/rs1
           wiredTigerLiveRestoreThreads: 5
           wiredTigerLiveRestoreReadSizeMB: 1
           cacheSizeGB: 5

We should remove the wiredTiger from the start of the configuration names so they are consistent with other WiredTiger settings.

Additionally the test should utilize the WT_LIVE_RESTORE_COMPLETE state in the WiredTiger.h file instead of hardcoding the number 2.