update ci

scripts/combine_files.sh

-#!/bin/bash
-#
-# Requires install swagger-cli: npm install -g swagger-cli
-#
-
-# Generate a file which combines all the spec files into a unique swagger definition file (maintains references)
-swagger-cli bundle ./spec/updated/ngsi-ld-spec-open-api.json -o ./bundle/ngsild_swagger_combined.json
-
-# Generate a file which combines all the spec files into a unique swagger definition file (removes references)
-# working with modified swagger-cli.js to avoid circular ref problem
-swagger-cli -d bundle --dereference ./spec/updated/ngsi-ld-spec-open-api.json -o ./bundle/ngsild_swagger_combined_dereferenced.json
-# modified version to allow circular ref
-# swagger-cli bundle --dereference="ignore" ./spec/updated/ngsi-ld-spec-open-api.json -o ./bundle/ngsild_swagger_combined.json
\ No newline at end of file