Change sshPublicKey in ldapPublicKey objectclass to be optional
Change sshPublicKey in ldapPublicKey objectclass to be optional

It's quite inconvenient when the objectClass cannot be added to the user
entry until the user add a SSH key and must be removed when (s)he remove
the last SSH key. The ssh-ldap-pubkey handles this situation, but if
users don't have rights to add an objectClass, then it can't work.

jirutka/ssh-ldap-pubkey,jirutka/ssh-ldap-pubkey