Support z/OSMF expired password and change password

[pablocarle]

Is your feature request related to a problem? Please describe.

API ML currently supports (https://docs.zowe.org/stable/user-guide/api-mediation-change-password-via-catalog/) changing the password when it's expired, but only in SAF authentication provider. This is not documented in this article.

Supporting the same in z/OSMF is not straight forward, it can only be done if this setting is enabled:

As in other cases the detailed message codes for expired password will not be available in the REST API call to z/OSMF as described in the note in https://www.ibm.com/docs/en/zos/2.5.0?topic=services-log-in-zosmf-server#izuprog_API_POSTauthReqWithToken__title__10

Describe the solution you'd like

• Docs in https://docs.zowe.org/stable/user-guide/api-mediation-change-password-via-catalog/ should state the limitations of this approach (currently only with SAF authentication provider and with z/OSMF will depend on a setting)
• API ML should support the expired password change if z/OSMF details are available.
• Zowe docs should specify the limitations and the configuration needed to make use of this feature with z/OSMF as authentication provider.

[github-actions[bot]]

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