fix: don't log tor control port password (#3110)

<!--- Provide a general summary of your changes in the Title above -->

## Description
<!--- Describe your changes in detail -->
Implement custom Debug impl that redacts the password

## Motivation and Context
<!--- Why is this change required? What problem does it solve? -->
<!--- If it fixes an open issue, please link to the issue here. -->
Logging passwords = bad

## How Has This Been Tested?
<!--- Please describe in detail how you tested your changes. -->
<!--- Include details of your testing environment, and the tests you ran to -->
<!--- see how your change affects other areas of the code, etc. -->
Base node doesnt log password

## Checklist:
<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
* [x] I'm merging against the `development` branch.
* [x] I have squashed my commits into a single commit.

common/src/configuration/global.rs

@@ -27,6 +27,8 @@ use config::{Config, ConfigError, Environment};
 use multiaddr::Multiaddr;
 use std::{
     convert::TryInto,
+    fmt,
+    fmt::Formatter,
     net::SocketAddr,
     num::{NonZeroU16, TryFromIntError},
     path::PathBuf,
@@ -824,7 +826,7 @@ pub enum DatabaseType {
 }
 
 //---------------------------------------------     Network Transport     ------------------------------------------//
-#[derive(Debug, Clone)]
+#[derive(Clone)]
 pub enum TorControlAuthentication {
     None,
     Password(String),
@@ -861,6 +863,16 @@ impl FromStr for TorControlAuthentication {
     }
 }
 
+impl fmt::Debug for TorControlAuthentication {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        use TorControlAuthentication::*;
+        match self {
+            None => write!(f, "None"),
+            Password(_) => write!(f, "Password(...)"),
+        }
+    }
+}
+
 #[derive(Debug, Clone)]
 pub enum SocksAuthentication {
     None,