collect VM console logs

Change-Id: Ib4513be761db792510f71bd24ef7dcc1650823fe
I get method error if removed the init. see below. 
References

   1. http://10.204.216.50/Docs/logs/0000_2014_08_12_18_24_06/test_details.log.2014-08-12-18:24:04
   2. http://10.204.216.50/Docs/logs/0000_2014_08_12_18_24_06/test_report.html
   3. http://10.204.216.50/Docs/logs/0000_2014_08_12_18_24_06/repos.html
   4. javascript:showCase(0)
   5. javascript:showCase(1)
   6. javascript:showCase(2)
   7. javascript:showClassDetail('c1',5)
   8. javascript:showClassDetail('c2',1)
   9. javascript:showClassDetail('c3',1)
****** in case of failure, process logs and VM console log is available at /ci-admin/failed_systest_logs/1  ******
/usr/local/jenkins/slave_scripts/ci-infra/util.rb:274:in `ci_cleanup': undefined method `first' for nil:NilClass (NoMethodError)