LU-1745 test: Fix recovery-small test 105

LU-1745 test: Fix recovery-small test 105

Update check_target_ir_state() to handle the old IR reported
state of ON/OFF as well as the new reported state of DISABLED/
ENABLED.

Signed-off-by: James Simmons <uja.ornl@gmail.com>
Change-Id: Ib2e10594cd2fb5d2e54d22187db32af9229e27ff
Reviewed-on: http://review.whamcloud.com/3667
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>