Create common errorID generation (#788)

scripts/errorid.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/hashicorp/vault/sdk/helper/base62"
+)
+
+const idLength = 10
+
+func main() {
+	rand, err := base62.Random(idLength)
+	if err != nil {
+		fmt.Printf("failed to generate error ID: %v\n", err)
+		os.Exit(1)
+	}
+	fmt.Println(rand)
+}