Update the server’s initialisation to use WiredTiger JSON message strings SP8

• Server initialisation of WiredTiger passes ‘json_output’ configuration options
• Server initialisation of WiredTiger constructs the WiredTiger configuration string to reflect our new logging component hierarchy.
• Handles reconfiguring the WiredTiger connection, constructing a new WiredTiger verbose configuration string to reflect parameter changes to the systemLog.component.wiredTiger.<newComponent> hierarchy.
• Implement functional tests