I have the same (or close) problem,
I was not asked for a password during the installation.
When I follow your steps .. all fail.
I have no files in there !!
ls: cannot access /etc/ldap/schema/*.ldif: No such file or directory
I donno what's wrong with me !
SASL/EXTERNAL authentication started
SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
SASL SSF: 0
adding new entry "cn=module,cn=config"
ldap_add: Other (e.g., implementation specific) error (80)
additional info: <olcModuleLoad> handler exited with 1
has no meaning with the previous errors.
Can you help me please?