Function getSupportedSaslMechanisms

get schema supported SASL Mechanisms from RootDSE.

• Contains the security mechanisms supported for SASL negotiation (see LDAP RFCs). By default, GSSAPI is supported.

Ref:

• https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/a98c1f56-8246-4212-8c4e-d92da1a9563b
• https://ldapwiki.com/wiki/SASL