Make the `token` field of `vault` a Password
Fixes and makes things more secure.  Win! Win!
@@ -51,7 +51,7 @@ func main() {
plugin.Field{
Mode: "target",
Name: "token",
- Type: "string",
+ Type: "password",
Title: "Auth Token",
Help: "The auth token for a user with privileges to read and write the entire secret/ tree.",
Required: true,
