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.

go.mod

@@ -6,13 +6,15 @@ require (
 	github.com/AnalogJ/go-util v0.0.0-20200905200945-3b93d31215ae // indirect
 	github.com/analogj/go-util v0.0.0-20190301173314-5295e364eb14
 	github.com/containrrr/shoutrrr v0.0.0-20200828202222-1da53231b05a
-	github.com/denisbrodbeck/machineid v1.0.1
+	github.com/denisbrodbeck/machineid v1.0.1 // indirect
 	github.com/fatih/color v1.9.0
 	github.com/gin-gonic/gin v1.6.3
 	github.com/golang/mock v1.4.3
 	github.com/jaypipes/ghw v0.6.1
 	github.com/jinzhu/gorm v1.9.14
 	github.com/kvz/logstreamer v0.0.0-20150507115422-a635b98146f0 // indirect
+	github.com/mattn/go-sqlite3 v1.14.4
+	github.com/mitchellh/mapstructure v1.2.2
 	github.com/sirupsen/logrus v1.2.0
 	github.com/spf13/viper v1.7.0
 	github.com/stretchr/testify v1.5.1
@@ -20,4 +22,6 @@ require (
 	golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59 // indirect
 	golang.org/x/sync v0.0.0-20190423024810-112230192c58
 	gopkg.in/yaml.v2 v2.3.0 // indirect
+	gorm.io/driver/sqlite v1.1.3
+	gorm.io/gorm v1.20.2
 )