TT#26264 Use /var/run/ngcp-sems again as home of user "sems", instead of /run

It breaks some tests, that could be changed, but maybe there are some other
unintended consequences, and it's not important to change to /run right now (in
fact, it might be undesired for consistency reasons with respect to the other
sems-service variant, etc.)

  User: sems: home: doesn't match, expect: [{"or":["/var/run/ngcp-sems","/var/run/sems"]}] found: ["/run/ngcp-sems"]

Change-Id: I2038e0d90b46dc12eeecf4bcc7ad4e249688ad20

debian/ngcp-sems.postinst

@@ -6,7 +6,7 @@ case "$1" in
   configure)
     # add sems user
     adduser --quiet --system --group --disabled-password --shell /bin/false \
-      --gecos "SIP Express Media Server" --home /run/ngcp-sems sems || true
+      --gecos "SIP Express Media Server" --home /var/run/ngcp-sems sems || true
   ;;
   abort-upgrade|abort-remove|abort-deconfigure)
     exit 0