pdb_ldap: Do not skip accounts without a sambaAcctFlags value

pdb_ldap: Do not skip accounts without a sambaAcctFlags value

We allow this to mean a sambaAcctFlags value of zero in other parts of the code
and by allowing these users to show up in a search, we can read and correct them
during the classicupgrade, rather than not know they exist at all.

Most parts of the code do not look for ACB_NORMAL, which is why
these users appear to work.

Andrew Bartlett

Reviewed-by: Stefan Metzmacher <metze@samba.org>