test setup v2: minor: kill hss if there

cmake_targets/autotests/v2/actions/alu_hss.bash

 sudo rmmod nasmesh || true
 sudo rmmod ue_ip || true
 sudo /opt/ltebox/tools/stop_ltebox || true
+sudo killall -9 hss_sim || true
 sudo /opt/hss_sim0609/starthss_real