On-boarding and Deploying xApps

RIC platform xApp onboard service provides REST APIs for xApp onboarding and testing. The following steps describes the workflow to onboard, config and deploy an xApp.

1. Onboard an xApp instruction from user
2. DMS_cli generates helm charts and uploads them to the local helm repo 
3. xApp descriptor and its schema are submitted to the DMS_cli running on the local host. 
4. xApp Helm charts are downloaded
5. xApp registration and configuration parameters are uploaded to the Appmgr
6. Appmgr combines the xApp helm charts from local helm repo and the new configuration
7. The rtmgr updates the route table and creates an xApp instance
8.  xApp is ready to send and receive E2 messages