[IAM] Security Settings / Password Policy - Password Composition

[uli-schneider]

Description of the enhancement

IAM SecuritySettings offers the possibility to manage "Passwort Composition"

Console Screenshot:

This parameter is now also added to Help-Center Documentation:
https://docs.otc.t-systems.com/identity-access-management/api-ref/apis/security_settings/modifying_the_password_policy.html

(Table 4)

Please add parameter to:
opentelekomcloud_identity_password_policy_v3

Thanks!