tree 720110e6bda9ddfcaf8e040bc3df7094715a825a
parent 8696cc815ab69aa9d7de6147ed9f40bbebff2115
author zhufl <zhu.fanglei@zte.com.cn> 1479286781 +0800
committer zhufl <zhu.fanglei@zte.com.cn> 1479349799 +0800

Move list_hosts to resource_setup in test_hosts_negative

In HostsAdminNegativeTestJSON, hosts can be get in resource_setup
to avoid getting them repeatedly in each testcase.
Besides, when a nonexistent hostname is needed, we can use the
string 'nonexistent_hostname' directly instead of creating a
random host name. Thus the whole code will look clearer.

Change-Id: Icbd10ec5cd0356763634ad4f92cad85e32d71ee6