Update git submodules

Update git submodules

* Update docs/submodules/sfc from branch 'master'
  - Merge "Revert "Add iteritems() when parsing dict in Python 2.x""
  - Revert "Add iteritems() when parsing dict in Python 2.x"

    This reverts commit e29fe40e0c98d6c3b619de7f99f0a8fb9e4a9d7b.

    acl_types_names is not a dictionary but a list of tuples:

    (Pdb) pp acl_types_names
    [(u'ietf-access-control-list:ipv4-acl',
      u'04a5ce7c-6aac-4f26-b3f9-a19749d814f3'),
     (u'ietf-access-control-list:ipv4-acl',
      u'75737a58-c894-46d9-9319-8d2b4785b0f3'),
     (u'ietf-access-control-list:ipv4-acl',
      u'bb422318-c3a3-4356-a67c-f44e8874edf6')]
    (Pdb) type(acl_types_names)
    <type 'list'>
    (Pdb) type(acl_types_names[0])
    <type 'tuple'>

    Therefore, this patch introduces an error

    Change-Id: I7f7e69fb1855c7915b2c17d80a5b7ea76aaa8694
    Signed-off-by: Manuel Buil <mbuil@suse.com>