Ensure any new functionality is designed for extensibility.

This work should include the following new features:

• Be able to accept configuration options read from a file:
  • Add a new arg -f followed by the filename of the configuration to parse
  • See below for the file format
• Enable or disable logging.
  • add enable_logging to the test configuration
  • log=(enabled=true/false) needs to be inserted in the database configuration when wiredtiger_open is called

The configurations provided in a text file will have the following format:

collection_count=2
key_count=5
value_size=10
read_threads=1
duration_seconds=10
cache_size_mb=1000
stat_cache_size=
START_SUBCONFIG
  enabled=true
  limit=100
END_SUBCONFIG
rate_per_second=10
enable_tracking=true
enable_timestamp=true
oldest_lag=1
stable_lag=1
min_operation_per_transaction=1
max_operation_per_transaction=1 

Indentation is there for readability but is not mandatory. It is possible to have n levels of subconfigs.