add conf file

build/scripts/nrf_conf.sh

+# prompt has been removed for easier Ctrl+C Ctrl+V
+# please update the following information according to your configuration
+
+INSTANCE=1
+PREFIX='/usr/local/etc/oai'
+sudo mkdir -m 0777 -p $PREFIX
+cp ../../etc/nrf.conf  $PREFIX
+
+declare -A NRF_CONF
+
+NRF_CONF[@INSTANCE@]=$INSTANCE
+NRF_CONF[@PREFIX@]=$PREFIX
+NRF_CONF[@PID_DIRECTORY@]='/var/run'
+
+NRF_CONF[@NRF_INTERFACE_NAME_FOR_SBI@]='ens3'
+
+NRF_CONF[@NRF_INTERFACE_PORT_FOR_SBI@]='80'
+NRF_CONF[@NRF_INTERFACE_HTTP2_PORT_FOR_SBI@]='9090'
+NRF_CONF[@NRF_API_VERSION@]='v1'
+
+
+for K in "${!NRF_CONF[@]}"; do 
+  egrep -lRZ "$K" $PREFIX | xargs -0 -l sed -i -e "s|$K|${NRF_CONF[$K]}|g"
+  ret=$?;[[ ret -ne 0 ]] && echo "Tried to replace $K with ${NRF_CONF[$K]}"
+done