tree fa30fe39a8571fb0f0f2ab899149bd57bc298451
parent d9317e633273d04f5af6dbd7b2c32b37ed174149
author jun xie <junxiebj@cn.ibm.com> 1389247236 +0800
committer jun xie <junxiebj@cn.ibm.com> 1389253296 +0800

Adds test_show_XX_fields cases to show some fields

This patch modifies the _show method to make it accept field_list.
It adds the cases to show some fields for network/subnet/port.
A related url example is
/v2.0/networks/103d47a3-XXXX-018c095ab35d?fields=id&fields=name

Change-Id: If2b9edd67ad0c43679332ec28ca80940c0c67d9e