Add new username check mode of password patterns to docs

Author: HasiniSama

en/identity-server/6.1.0/docs/apis/identity-governance-rest-api.md

@@ -26,6 +26,7 @@ and properties of connectors as mentioned below. <br>
     | Minimum number of characters  | passwordPolicy.min.length   | This denotes the minimum number of characters in the password. |
     | Maximum number of characters  | passwordPolicy.max.length   | This denotes the maximum number of characters in the password. |
     | Password pattern regex   | passwordPolicy.pattern   | The regular expression pattern to validate the password. |
+    | Username check mode   | passwordPolicy.username.check.mode   | Check if password contains or equals to username. |
     | Error message on pattern violation   | passwordPolicy.errorMsg   | The error message that will be displayed when a pattern violation is detected in the password. |
 
 ??? "User Onboarding"

en/identity-server/6.1.0/docs/guides/password-mgt/password-policies.md

@@ -61,13 +61,22 @@ WSO2 Identity Server (IS) allows you to define custom password policies and enfo
     </div></td>
     </tr>
     <tr class="even">
+    <td>Username check mode</td>
+    <td>Check if password contains or equals to username.</td>
+    <td>-</td>
+    </tr>
+    <tr class="odd">
     <td>Error message on pattern violation</td>
     <td>This value specifies the error message that will appear if the password policy is violated at the point of user creation.</td>
     <td>'Password pattern policy violated. Password should contain a digit[0-9], a lower case letter[a-z], an upper case letter[A-Z], one of !@#$%&amp;* characters'</td>
     </tr>
     </tbody>
     </table>
 
+!!! abstract ""
+
+    This feature is available for WSO2 IS 6.1.0 from update level 250 onwards (Updates 2.0 model). If you don't already have this update, see the instructions on [updating WSO2 products](https://updates.docs.wso2.com/en/latest/updates/overview/).
+
 !!! warning "Ask Password and JIT Provisioning"
 
     When registering users with [Password Entry (ask password)]({{base_path}}/guides/identity-lifecycles/invitation-workflow/) or [JIT Provisioning]({{base_path}}/get-started/provisioning-architecture/#jit-provisioning), temporary passwords are automatically generated and validated against a predefined PasswordJavaRegEx regular expression in the user store configurations. For complex regex patterns, the password validation could fail causing an unsuccessful user registration.

en/identity-server/next/docs/apis/governance-connectors.md

@@ -19,6 +19,7 @@ This is the RESTful API for managing identity governance configurations in WSO2
     | Minimum number of characters  | passwordPolicy.min.length   | This denotes the minimum number of characters in the password. |
     | Maximum number of characters  | passwordPolicy.max.length   | This denotes the maximum number of characters in the password. |
     | Password pattern regex   | passwordPolicy.pattern   | The regular expression pattern to validate the password. |
+    | Username check mode   | passwordPolicy.username.check.mode   | Check if password contains or equals to username. |
     | Error message on pattern violation   | passwordPolicy.errorMsg   | The error message that will be displayed when a pattern violation is detected in the password. |
 
 ??? "User Onboarding"