Change PID file paths for passt and dnsmasq

: "${PASST_MTU:=""}"

: "${PASST_OPTS:=""}"

: "${PASST_DEBUG:=""}"

: "${PASST_PID:="$QEMU_DIR/passt.pid"}"

: "${PASST_PID:="/var/run/passt.pid"}"

: "${DNSMASQ_OPTS:=""}"

: "${DNSMASQ_DEBUG:=""}"

: "${DNSMASQ:="/usr/sbin/dnsmasq"}"

: "${DNSMASQ_PID:="$QEMU_DIR/dnsmasq.pid"}"

: "${DNSMASQ_PID:="/var/run/dnsmasq.pid"}"

: "${DNSMASQ_CONF_DIR:="/etc/dnsmasq.d"}"

ADD_ERR="Please add the following setting to your container:"