Add email_ban_file to TS schema

lib/galaxy/config/sample/tool_shed.yml.sample

@@ -322,6 +322,24 @@ tool_shed:
   # <email_domain_blocklist_file> will be ignored.
   #email_domain_allowlist_file: null
 
+  # E-mail ban file is used to specify email addresses that have been
+  # banned. If a user attempts to register a new account using an email
+  # address listed in this file, registration will be denied. This file
+  # does not affect user sign-in.
+  # Email addresses are matched against a canonical address
+  # representation based on the following set of rules. - Values are not
+  # case-sensitive ([email protected] == [email protected]) - Plus
+  # suffixes in the local-part of a Gmail account are ignored
+  # ([email protected] == [email protected]) - Periods
+  # in the local_part of a Gmail account are ignored
+  # ([email protected] == [email protected])
+  # The file should include one email address per line. Lines starting
+  # with the "#" character are ignored.
+  # Example value 'banned_emails.conf'
+  # The value of this option will be resolved with respect to
+  # <config_dir>.
+  #email_ban_file: null
+
   # Append "/{brand}" to the "Galaxy" text in the masthead.
   #brand: null
 

lib/galaxy/config/schemas/tool_shed_config_schema.yml

@@ -570,6 +570,24 @@ mapping:
           therefore, in case <email_domain_allowlist_file> is set and is not empty,
           <email_domain_blocklist_file> will be ignored.
 
+      email_ban_file:
+        type: str
+        path_resolves_to: config_dir
+        required: false
+        desc: |
+          E-mail ban file is used to specify email addresses that have been banned.
+          If a user attempts to register a new account using an email address listed in this file,
+          registration will be denied. This file does not affect user sign-in.
+
+          Email addresses are matched against a canonical address representation based on the following set of rules.
+          - Values are not case-sensitive ([email protected] == [email protected])
+          - Plus suffixes in the local-part of a Gmail account are ignored ([email protected] == [email protected])
+          - Periods in the local_part of a Gmail account are ignored ([email protected] == [email protected])
+
+          The file should include one email address per line. Lines starting with the "#" character are ignored.
+
+          Example value 'banned_emails.conf'
+
       brand:
         type: str
         required: false