[COOK-4709] Add start mode to pool LWRP

IIS app pools have a setting called [startMode] which
can be set to AlwaysRunning or OnDemand
[COOK-4709] Add auto start to pool LWRP

IIS app pools have a setting called [autoStart] which
can be set to True or False
[COOK-4709] Add preload enabled to app LWRP

IIS applications have a setting called [preloadEnable] which
can be set to True or False