EX-5932 lipe: stratagem-hp-config.sh has wrong MDTLIST

EX-5932 lipe: stratagem-hp-config.sh has wrong MDTLIST

stratagem-hp-config.sh doesn't pick up proper MDTLIST
if snapshot agents are running. Fix MDTLIST which is used
to configure lpurge

Test-Parameters: trivial
Signed-off-by: Alexandre Ioffe <aioffe@ddn.com>
Change-Id: Ic1d58d56f1acae140122d0b582410c140759e89e
Reviewed-on: https://review.whamcloud.com/48619
Reviewed-by: Shuichi Ihara <sihara@ddn.com>
Reviewed-by: Colin Faber <cfaber@ddn.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>