adding support for a collecto config file.

/scrutiny/config/collector.yaml

Adding ability to specify host identifier (label), that is updated on every collector run.
Can be specified by `host-id` CLI or `COLLECTOR_HOST_ID` env var.

Created a config class, interface and associated tests.

Created a "TransformDetectedDrives" function, that will allow users to insert drives not detected by Smarctl --scan, ignore drives that they dont want, and override smartctl device type.

Added Upsert functionality when registering devices.

Replaced "github.com/jinzhu/gorm" with "gorm.io/gorm" (ORM location moved, was using incorrect lib url)
Removed machineid library.

collector/pkg/detect/devices_linux.go

@@ -12,14 +12,14 @@ func DevicePrefix() string {
 
 func (d *Detect) Start() ([]models.Device, error) {
 	// call the base/common functionality to get a list of devices
-	detectedDevices, err := d.smartctlScan()
+	detectedDevices, err := d.SmartctlScan()
 	if err != nil {
 		return nil, err
 	}
 
 	//inflate device info for detected devices.
 	for ndx, _ := range detectedDevices {
-		d.smartCtlInfo(&detectedDevices[ndx]) //ignore errors.
+		d.SmartCtlInfo(&detectedDevices[ndx]) //ignore errors.
 	}
 
 	return detectedDevices, nil