provisioning: removes id from dashboard.json

if dashboard json files contains `id` we
will just remove it form the dashboard model
before importing it into the database.

closes #11138

pkg/services/provisioning/dashboards/file_reader_test.go

@@ -15,9 +15,10 @@ import (
 )
 
 var (
-	defaultDashboards string = "./test-dashboards/folder-one"
-	brokenDashboards  string = "./test-dashboards/broken-dashboards"
-	oneDashboard      string = "./test-dashboards/one-dashboard"
+	defaultDashboards = "./test-dashboards/folder-one"
+	brokenDashboards  = "./test-dashboards/broken-dashboards"
+	oneDashboard      = "./test-dashboards/one-dashboard"
+	containingId      = "./test-dashboards/containing-id"
 
 	fakeService *fakeDashboardProvisioningService
 )
@@ -85,6 +86,18 @@ func TestDashboardFileReader(t *testing.T) {
 				So(len(fakeService.inserted), ShouldEqual, 1)
 			})
 
+			Convey("Overrides id from dashboard.json files", func() {
+				cfg.Options["path"] = containingId
+
+				reader, err := NewDashboardFileReader(cfg, logger)
+				So(err, ShouldBeNil)
+
+				err = reader.startWalkingDisk()
+				So(err, ShouldBeNil)
+
+				So(len(fakeService.inserted), ShouldEqual, 1)
+			})
+
 			Convey("Invalid configuration should return error", func() {
 				cfg := &DashboardsAsConfig{
 					Name:   "Default",