tree a8f7dbd9056e77a8818550b9b6e3d859d3dce9e5
parent 7e0684a310a1cf8a42baf5267e3ec58c6821461d
author ivan-zhu <bozhu@linux.vnet.ibm.com> 1386655358 +0800
committer ivan-zhu <bozhu@linux.vnet.ibm.com> 1386916359 +0800

avoid resource leaks in keypairs tests

this does some code refactor, uses addCleanup to
avoid resource leaks. and import the module test
instead of attr.

Change-Id: I188bec7dda2cd0f180252a9844e378bb2f8ff6da