add MTS api in MEC015.md in Network Scenario

| yes | `/mts_sessions` | |

| yes | `/mts_sessions/{sessionId}` | |

_NOTE TODO

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## MEC015 v2.2.1 (not published)

## MEC015 v2.2.1 (Not published yet)

References:

* https://www.etsi.org/deliver/etsi_gs/MEC/001_099/015/02.02.01_60/gs_mec015v020201p.pdf

* https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/tree/v2.2.1

* https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/blob/v2.2.1/BwManagementApi.yaml

* https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/blob/v2.1.1/TrafficSteeringApi.yaml

* https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/blob/v2.2.1/TrafficSteeringApi.yaml

### Bandwidth Management API Endpoints

| Endpoint | Sandbox Usage |Notes |

### Traffic Steering API Endpoints

| Endpoint | Sandbox Usage |Notes |

| ---------- | --------------------- | -------------- |

| [/mts_capability_info](https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/blob/v2.1.1/TrafficSteeringApi.yaml#/mts)  |  GET - Retrieve the MTS capability information

| [/mts_sessions](https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/blob/v2.1.1/TrafficSteeringApi.yaml#/mts)  | GET -   Retrieve information about specific MTS session <br><br> PUT    -   Update the information about specific MTS session <br><br>  DELETE  -    Remove specific MTS session

| [/mts_sessions/{sessionId}](https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/blob/v2.1.1/TrafficSteeringApi.yaml#/mts)  | GET -  Retrieve information about a list of MTS sessions <br><br> POST -  Create a MTS session  

| [/mts_capability_info](https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/blob/v2.2.1/TrafficSteeringApi.yaml#/mts) | GET - Retrieve the MtsCapabilityInfo and return it. | As a MEC Sandbox user, I use this endpoint to retrieve the MTS capability information without using any query parameter.

| [/mts_sessions/{sessionId}](https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/blob/v2.2.1/TrafficSteeringApi.yaml#/mts)| GET -  Retrieve information about a specific MTS session. <br><br> Returns specific MTS session resource information. <br><br> PUT - Update the information about specific MTS session. <br><br> Returns an updated MTS session resource information. <br><br>  DELETE  -    Remove information about a specific MTS session. | <br><br> **As a MEC Sandbox user, I use this endpoint to retrieve/update/delete a specific MTS session resource.** <br><br> As a MEC Sandbox user, I use this endpoint to retrieve a specific MTS session resource based on its sessionId.  <br><br> As a MEC Sandbox user, I use this endpoint to update/replace a MTS session resource by providing sessionId along with the requested changes of MtsSessionInfo type. <br><br> As a MEC Sandbox user, I use this endpoint to delete a specific MTS session resource based on its sessionId.

| [/mts_sessions](https://forge.etsi.org/rep/mec/gs015-bandwith-mgmt-api/-/blob/v2.2.1/TrafficSteeringApi.yaml#/mts) | GET - Retrieve information about all the existing MTS sessions. <br><br> Query Parameters: <ul><li> app_instance_id: Retrieve information about a list of MtsSessionInfo associated with appInsId. <li> app_name: Retrieve information about a list of MtsSessionInfo associated with appName. <li> sessionId: Retrieve information about a list of MtsSessionInfo associated with session_id. <li> If no query parameter passed, it returns the list of all existing MTS sessions resources. </ul> <br> POST - Create a MTS session. <br><br> Returns MTS session resource information along with unique sessionId. | As a MEC Sandbox user, I use this endpoint to list down all the MTS sessions with/without using query parameters.<br><br> As a MEC Sandbox user, I use this endpoint to create a MTS session based on requestType (Application / Session Specific MTS session), allocationDirection (uplink/downlink/symmetrical), flowFilter, mtsMode values and allocate each session resource with a unique sessionId.