tree 1c54851ae980321676bfe1975750739bd3563e7d
parent d3cbf488f7b919cdecb673ba6460f31a82ac1920
author Zhi Kun Liu <zhikunli@cn.ibm.com> 1395904270 -0500
committer Zhi Kun Liu <zhikunli@cn.ibm.com> 1395904270 -0500

fix sahara base class

1. get client mamager after service available checking
2. checking cls's attribute in tearDownClass to avoid
   exceptions

Change-Id: I596284dceadcb5f0144495bd346d570c6bb35e0f