Merge pull request #667 from redis/DOC-4527

RC: Add password length requirements

Author: cmilesb

content/operate/rc/security/access-control/data-access-control/create-assign-users.md

@@ -42,7 +42,9 @@ An error occurs if a user tries to connect to a memcached database with the user
 
     {{<image filename="images/rc/data-access-control-users-add-role.png" width="300px" alt="User select role." >}}
 
-1. Enter and confirm the user's password, then select the check mark to save the user. 
+1. Enter and confirm the user's password. ACL user passwords must be between 8 and 128 characters long.
+
+    Then, select the check mark to save the user. 
 
     {{<image filename="images/rc/data-access-control-users-password-and-finish.png" width="300px" alt="User add password and finish." >}}
 

content/operate/rc/security/access-control/data-access-control/default-user.md

@@ -38,7 +38,7 @@ To change the default user password for your database:
 
     {{<image filename="images/rc/button-database-edit.png" width="150px" alt="The Edit database button lets you change the database's default user password." >}}
 
-1. Under the **Security** section, enter the new password in the **Default user password** field.
+1. Under the **Security** section, enter the new password in the **Default user password** field. Database passwords must be less than 50 characters long.
 
 1. Select **Save database** to update the password.