Fix the client-side search size limit.
    
    I've changed the variable name searchlimit to sizelimit to match the
    name in python-ldap (and hopefully therefore be more readable).
    
    The big change was changing the default value from 0 to -1. As 0 we were
    never using the value from cn=ipaconfig
    
    python-ldap expects this to be an int type
    
    In the UI sizelimit was hardcoded at 0 for users
    
    439880