Misleading Keytab field

The 'Keytab' field in output of all 'user-*' commands was changed
to 'Kerberos keys available'. In order to do this change for 'user-*'
commands only, the flag 'has_keytab' had to be removed from common
output parametrs in ipalib/baseldap.py. This change also affected the
host.py and service.py, where the 'has_keytab' flag was added to their
local output params. Both host.py and service.py holds the old field
caption - 'Keytab' - because of compatibility with older clients.

https://fedorahosted.org/freeipa/ticket/1961

ipalib/plugins/host.py

@@ -162,6 +162,9 @@ def remove_fwd_ptr(ipaddr, host, domain, recordtype):
         pass
 
 host_output_params = (
+    Flag('has_keytab',
+        label=_('Keytab'),
+    ),
     Str('managedby_host',
         label='Managed by',
     ),