Use "5Qi" as the schema to define Default QoS Flow 5G QoS Indicator v…

…alue. (#9817)

On SIM policy we use the 'Default QoS Flow 5G QoS Indicator value', we were incorrectly using the '5QiPriorityLevel' schema (which is an interger between 1 and 127 as per https://github.com/Azure/azure-rest-api-specs-pr/blob/RPSaaSMaster/specification/mobilenetwork/resource-manager/Microsoft.MobileNetwork/stable/2022-11-01/ts29571.json#L117. We should have used 5Qi - an integer between 0 and 255. We made a mistake when we first p ut this in and have no spotted it.

Even though changing the allowed values for a property is a breaking change, we think this is acceptable because:
1) This is our first stable API, there is no pre-existing stable API we need to be back-compatible with
2) 2022-04-01-preview to 2022-11-01 already contains breaking changes that we have discussed in https://eng.ms/docs/strategic-missions-and-technologies/strategic-missions-and-technologies-organization/azure-for-operators/packet-core/private-mobile-network/azure-private-5g-core/cross-team/releases/2022-11-01-arm-api/back-compatibility
3) We have one customer who may need to use values 128-255 -> if that customer does PUTs with the 2022-11-01 API then a GET with the 2022-04-01, it will fail, while this is sad, we think this is an acceptable risk.

specification/mobilenetwork/resource-manager/Microsoft.MobileNetwork/stable/2022-11-01/simPolicy.json

@@ -406,7 +406,7 @@
         },
         "5qi": {
           "description": "Default QoS Flow 5G QoS Indicator value. The 5QI identifies a specific QoS forwarding treatment to be provided to a flow. This must not be a standardized 5QI value corresponding to a GBR (guaranteed bit rate) QoS Flow. The illegal GBR 5QI values are: 1, 2, 3, 4, 65, 66, 67, 71, 72, 73, 74, 75, 76, 82, 83, 84, and 85. See 3GPP TS23.501 section 5.7.2.1 for a full description of the 5QI parameter, and table 5.7.4-1 for the definition of which are the GBR 5QI values.",
-          "$ref": "./ts29571.json#/definitions/5QiPriorityLevel",
+          "$ref": "./ts29571.json#/definitions/5Qi",
           "default": 9
         },
         "allocationAndRetentionPriorityLevel": {