SYSDB: Drop the sysdb_ctx parameter from the autofs API

Add ldap_autofs_map_master_name option

LDAP: Compare lists of DNs when saving autofs entries https://fedorahosted.org/sssd/ticket/1758 The autofs entries do not have the key as an unique identifier, but rather the full (key, value) tuple as some keys have a special meaning, such as the direct mount key (/-) and may be present in a single map multiple times. Comparing the full DN that contains both the key and the value will allow for working updates if either key or value changes.

Add domain argument to sysdb autofs functions

SYSDB: Add API to invalidate all map objects This sysdb API will be used later to invalidate the autofs maps

AUTOFS: Use both key and value in entry RDN This patch switches from using just key in the RDN to using both key and value. That is neccessary to allow multiple direct mounts in a single map.

AUTOFS: Add entry objects below map objects https://fedorahosted.org/sssd/ticket/1506 Changes how the new autofs entry objects are handled. Instead of creating the entry on the cn=autofs,cn=custom level, the entry is created below the map it belongs to.

Add sysdb_set_service_attr and sysdb_set_autofsmap_attr

AUTOFS: sysdb interface