Research on supporting objectGUID

[jbostoen]

objectGUID is an interesting attribute to sync on, especially in the long run (name changes). This gets set once and is a read-only property afterwards.

Might be similar for objectSID.

• Adldap2/Adldap2-Laravel#762
• https://stackoverflow.com/questions/39533560/php-ldap-get-user-sid
• https://www.null-byte.org/development/php-active-directory-ldap-authentication/