Fix golangci-lint issues

As part of updating dapper files, golangci-lint was set to be used. This
caused a lot of lint issues to crop up, which this fixes.

controller/cluster_check.go

@@ -99,7 +99,6 @@ func getValue(obj interface{}, name ...string) reflect.Value {
 	t := v.Type()
 	if t.Kind() == reflect.Ptr {
 		v = v.Elem()
-		t = v.Type()
 	}
 
 	field := v.FieldByName(name[0])