[restGateway] added CORS support

src/rest-gateway/app/main.py

@@ -21,12 +21,14 @@ import connexion
 from security import swagger_util
 from env_info import is_running_locally, get_resources_path
 from flask import request
+from flask_cors import CORS
 from flask import redirect
 
 
 # start app
 if __name__ == '__main__':
     app = connexion.App(__name__, specification_dir='configs/')
+    CORS(app.app)
 
     @app.app.before_request
     def before_request():

src/rest-gateway/app/requirements.txt

@@ -9,10 +9,10 @@ click==7.1.2
 clickclick==1.2.2
 colorama==0.4.3
 connexion==2.7.0
-coverage==5.3.1
 cryptography==2.9.2
 Deprecated==1.2.10
 Flask==1.1.2
+Flask-Cors==3.0.10
 idna==2.10
 importlib-metadata==1.7.0
 inflection==0.5.0