This new freeform host attribute will allow provisioning systems
to add custom tags for host objects which can be later used for
in automember rules or for additional local interpretation.

Design page: http://www.freeipa.org/page/V3/Integration_with_a_provisioning_systems
Ticket: https://fedorahosted.org/freeipa/ticket/3583

Hide the commands and options listed below from the CLI,
but keep them in the API. When called directly from the API,
raise appropriate exceptions informing the user that the
functionality has been deprecated.

Affected commands: hbacrule_add_sourcehost, hbacrule_remove_sourcehost.
Affected options: sourcehostcategory, sourcehost_host and
sourcehost_hostgroup (hbacrule); sourcehost (hbactest).

https://fedorahosted.org/freeipa/ticket/3528

Fix output of dnsrecord_del: it now uses output.standard_delete
and excludes --all and --raw flags.
Fix output of sudorule_{add,remove}_option: they now use
output.standard_entry and include --all and --raw flags.

https://fedorahosted.org/freeipa/ticket/3503

https://fedorahosted.org/freeipa/ticket/3329

Change user-add's uid & gid parameters from autofill to optional.
Change the DNA magic value to -1.

For old clients, which will still send 999 when they want DNA
assignment, translate the 999 to -1. This is done via a new
capability, optional_uid_params.

Tests included

https://fedorahosted.org/freeipa/ticket/2886

Current master branch represents future release of FreeIPA (3.2).
Bump VERSION so that current development packages are not being
updated with freeipa-3.1.x packages already released in downstream
repositories.