Added idle_timeout: to fix time-outs problems for some tests

Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>
Fixed syntax

Signed-off-by: Yuri Weinstein <yuri.weinstein@inktank.com>
Merge pull request #83 from ceph/wip_add_manual_override2

Added idle_timeout: to fix time-outs problems for some tests