Validator manager commands for the Keymanager APIs (#6261)

* Validator manager commands for standard key-manager APIs

* Merge latest unstable

* Fix Some in lib.rs

* Replace Arg::with_name with Arg::new

* Update takes_value

* Remove clap::App

* Change App to Command

* Add command in use

* Remove generic in ArgMatches

* Fix matches.get_flag

* Fixes

* fix error handling

* SetTrue in import

* Fix

* Fix builder-proposal flag (will delete the flag later)

* Minor fix

* Fix prefer_builder_proposals

* Remove unwrap

* Error handling from Michael

* Add cli help text

* Use None in import to simplify

* Delete unwrap

* Revert flags option

* Simplify help command code

* Remove flag header in move

* Merge remote-tracking branch 'origin/unstable' into pahor/validator-manager-standard-keystore

* Add log in VC when keystore is deleted

* Delete duplicated log when validator does not exist

* Simplify log code

* Rename remove to delete

* cargo-fmt

* Try to remove a function

* make-cli

* Error handling

* Merge branch 'vm' of https://github.com/chong-he/lighthouse into vm

* Update CLI hel text

* make-cli

* Fix checks

* Merge branch 'vm' of https://github.com/chong-he/lighthouse into vm

* Try to fix check errors

* Fix test

* Remove changes

* Update flag name

* CLI display order

* Move builde_proposals flag

* Add doc

* mdlint

* Update validator_manager/src/list_validators.rs

Co-authored-by: Mac L <mjladson@pm.me>

* Delete empty line

* Fix list

* Simplify delete

* Add support to delete more validators

* Fix test

* Rename response

* Add (s)

* Add test to delete multiple validators

* Book and cli

* Make cli

* Only log when keystore is deleted

* Revise deletion log

* Add validator pubkey to error message

* Merge import

* Thank you Mac

* Test

* Add flags

* Error handling for password

* make cli

* Merge remote-tracking branch 'origin/unstable' into vm

* make cli

* Fix test

* Merge branch 'vm' of https://github.com/chong-he/lighthouse into vm

* Fix test

* vm test

* Debug trait thank you Michael

* Fix test

* Merge branch 'unstable' into vm

* test

* testing

* Combine import validator(s)

* make cli

* Add requires

* Update book

* mdlint

* Only show import log when import is successful

* delete testing

* Test for standard format

* Test standard format

* Test

* fix builder_proposals flag

* Fix test for standard format

* Add requires

* Fix vm test

* make cli

* Remove flag header

* Merge branch 'vm' of https://github.com/chong-he/lighthouse into vm

* make cli

* Delete space

* Merge branch 'vm' of https://github.com/chong-he/lighthouse into vm

* Merge branch 'unstable' into vm

* Rename delete_validator to delete_validators

* Rearrange

* Remove pub in run function

* Fix grammar

* Apply suggestions from code review

Co-authored-by: Michael Sproul <micsproul@gmail.com>

* Remove description

* Merge branch 'vm' of https://github.com/chong-he/lighthouse into vm

* Close bracket

* make cli

* Revise list code and test

* Revise import flag

* make cli

* Comment out test

* Update vm test

* Simplify

* Merge remote-tracking branch 'origin/unstable' into vm

* make cli

* Add test

* Add password as a requirement for keystore file

* Correct flags in docs

* typo

common/account_utils/src/lib.rs

@@ -9,13 +9,16 @@ use eth2_wallet::{
 use filesystem::{create_with_600_perms, Error as FsError};
 use rand::{distributions::Alphanumeric, Rng};
 use serde::{Deserialize, Serialize};
-use std::fs::{self, File};
 use std::io;
 use std::io::prelude::*;
 use std::path::{Path, PathBuf};
 use std::str::from_utf8;
 use std::thread::sleep;
 use std::time::Duration;
+use std::{
+    fs::{self, File},
+    str::FromStr,
+};
 use zeroize::Zeroize;
 
 pub mod validator_definitions;
@@ -215,6 +218,14 @@ pub fn mnemonic_from_phrase(phrase: &str) -> Result<Mnemonic, String> {
 #[serde(transparent)]
 pub struct ZeroizeString(String);
 
+impl FromStr for ZeroizeString {
+    type Err = String;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        Ok(Self(s.to_owned()))
+    }
+}
+
 impl From<String> for ZeroizeString {
     fn from(s: String) -> Self {
         Self(s)