Fix logging command line flags for default config (#4363)
Fix logging command line flags for default config (#4363)

* Set defaultLogFilePath even when no config is specified

* Use logFilePath command line flag in default config

* Set log keys from -log flag

* Initialize console.enabled based on log key flag

* Add configServer flag value to default config

ceejatec/sync_gateway,ceejatec/sync_gateway,couchbaselabs/sync_gateway,couchbaselabs/sync_gateway,couchbaselabs/sync_gateway,ceejatec/sync_gateway,couchbaselabs/sync_gateway,ceejatec/sync_gateway