TT#76552 KAM_DIR to /run/kamailio/cfgtest

After https://gerrit.mgm.sipwise.com/c/templates/+/43662
we are getting:

> proxy[21449]: ERROR: <null> cfgt [cfgt_int.c:413]: cfgt_save_node(): failed to make directory: Permission denied

Change-Id: I88781316d416595cdcac06e363ffa93703f79684

run_tests.sh

@@ -13,7 +13,7 @@ SEMS_LOG=${SEMS_LOG:-"/var/log/ngcp/sems.log"}
 SEMS_PBX_LOG=${SEMS_PBX_LOG:-"/var/log/ngcp/sems-pbx.log"}
 RTP_LOG=${RTP_LOG:-"/var/log/ngcp/rtp.log"}
 TMP_LOG_DIR="/tmp"
-KAM_DIR="/tmp/cfgtest"
+KAM_DIR="/run/kamailio/cfgtest"
 COREDUMP_DIR="/ngcp-data/coredumps"
 PROFILE="${PROFILE:-}"
 OPTS=(-Tnone -M -C) #SKIP_TESTS=true, SKIP_MOVE_JSON_KAM=true, SKIP=true