Edit MBR upstream and downstream in Device Group does not propagate the values to subscribers in DB

[patriciareinoso]

Description

the values of Maximum Bitrate (upstream and downstream) of the Device Group are used in the SubscribedUeAmbr and SessionAmbr fields of the subscriber during creation. These fields are not modified in the subscriber when we edit them in a Device Group.

How to reproduce

1. Create a Device Group
2. Create a subscriber associated to the DG.
3. Edit the Maximum Bitrate - Downstream and Maximum Bitrate - Upstream in the DG.
4. Check the content of the Subscriber

 "AccessAndMobilitySubscriptionData": {
    "gpsis": [
      "msisdn-0900000000"
    ],
    "subscribedUeAmbr": {
      "uplink": "20 Mbps",
      "downlink": "200 Mbps"
    },
    "nssai": {
      "defaultSingleNssais": [
        {
          "sst": 1,
          "sd": "102030"
        }
      ],
      "singleNssais": [
        {
          "sst": 1,
          "sd": "102030"
        }
      ]
    }
  },
 "SessionManagementSubscriptionData": [
    {
      "singleNssai": {
        "sst": 1,
        "sd": "102030"
      },
      "dnnConfigurations": {
        "internet": {
          "pduSessionTypes": {
            "defaultSessionType": "IPV4",
            "allowedSessionTypes": [
              "IPV4"
            ]
          },
          "sscModes": {
            "defaultSscMode": "SSC_MODE_1",
            "allowedSscModes": [
              "SSC_MODE_2",
              "SSC_MODE_3"
            ]
          },
          "5gQosProfile": {
            "5qi": 9,
            "arp": {
              "priorityLevel": 8,
              "preemptCap": "",
              "preemptVuln": ""
            },
            "priorityLevel": 8
          },
          "sessionAmbr": {
            "uplink": "20 Mbps",
            "downlink": "200 Mbps"
          }
        }
      }
    }
  ],

[patriciareinoso]

Fixed by #283