Test cases for: "FloatingIPs PTR" resords.

1) test_set_floatingip_ptr
   Set a PTR record for the given FloatingIP.
2) test_show_floatingip_ptr
   Shows a particular FloatingIP PTR
3) test_list_floatingip_ptr_records
   List FloatingIP PTR records
4) test_unset_floatingip_ptr
   Unset the PTR record for a FloatingIP
5) test_set_floatingip_ptr_invalid_ttl
   Try to use invalid TTL to set PTR record.
   Expected 400 BadRequest

Change-Id: Ib7a3b829129f2534f67c66c5f58e7c7c3c2f93c9
4 files changed