New setting in Server Configuration to on/off AuthType Plaintext_password and No_password

[HeenaBansal2009]

Changelog category (leave one):

• New Feature
   
  Changelog entry :
  A new settings called <allow_plaintext_password><allow_no_password> is added in server configuration which on/off insecure AUTH_TYPE plaintext-password and no_password.
  By default the property is set to true which means authType Plaintext_password & NO_password is allowed.

Detailed description / Documentation draft:
Currently clickhouse user can store the password in configuration file and user access entity can be created using SQL statements identified with Plaintext_passowrd and no_password. Good password management guidelines require that a password never be stored in plaintext. Password submission in cleartext format OR using no password authentication is always considered as insecure.
This feature hardens the user configuration and allows admin to disable insecure auth_type (plaintext_password and no_password).

<allow_plaintext_and_no_password>0</allow_plaintext_and_no_password>
If this property is unset in clickhouse server configuration, ALTER/CREATE users are not allowed without AUTH_TYPE and IDENTIFIED WITH NO_PASSWORD/PLAINTEXT_PASSWORD.

CREATE USER u1_01292 NOT IDENTIFIED -- { serverError 43 } 

CREATE USER u2_01292 IDENTIFIED WITH plaintext_password BY 'qwe123' -- { serverError 43 } 

CREATE USER u1_01292  { serverError 43 } 

CREATE USER u_02207 IDENTIFIED WITH double_sha1_hash BY '8DCDD69CE7D121DE8013062AEAEB2A148910D50E' -- {Allowed}

Additionally , Users existed in system.users with no-password and plaintext_password AuthType won't be able to login if this property is unset i.e plaintext and no_password are not allowed.

Issue #33953

[HeenaBansal2009]

@vitlibar,I see that 6 checks are failing which doesn't seems to be related to my changes.
I've finished with initial implementation, waiting for review/comments and suggestions from you.

[HeenaBansal2009]

@vitlibar , Thanks for merging the PR.
Do you see any documentation update for this feature. However , I have updated the config.xml with configuration <allow_no_password> and <allow_plaintext_password>