Verify generated code are good for existing RPs with TypeSpec

[XiaofeiCao]

No compilation issues, mvn verify works, live test can pass for list operation, etc.

Verification steps:

1. Clone azure-rest-api-specs repo
2. Add java specific configs in tspconfig.yaml in local azure-rest-api-specs repo, e.g. https://github.com/XiaofeiCao/azure-rest-api-specs/blob/mpg_fluentgen/specification/sphere/Sphere.Management/tspconfig.yaml (notice the added "service-dir", "emit" and "@azure-tools/typespec-java" options)
3. Under azure-sdk-for-java repo root, run pwsh eng/common/scripts/TypeSpec-Project-Process.ps1 <path-to-local-tsp-file-folder>
   e.g. pwsh eng/common/scripts/TypeSpec-Project-Process.ps1 ../azure-rest-api-specs/specification/communitytraining/Community.Management
   , verify generation process
4. Under generated SDK repo folder, run
   a. mvn install -f <path-to-sdk-repo>/eng/code-quality-reports/pom.xml
   b. mvn verify -f <path-to-generated-sdk-pom>/pom.xml "-Dcodesnippet.skip"
5. Add live test for list operation and run, verify test pass.
6. (Optional) api-view diff check for existing SDKs generated with Swagger.

### Tasks
- [x] azurelargeinstance - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/azurelargeinstance/AzureLargeInstance.Management
- [x] communitytraining - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/communitytraining/Community.Management
- [x] containerservicefleet - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/containerservice/Fleet.Management
- [ ] containerstorage - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/containerstorage/ContainerStorage.Management
- [x] devopsinfrastructure - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/devopsinfrastructure/Microsoft.DevOpsInfrastructure
- [ ] iotoperationsdataprocessor - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/iotoperationsdataprocessor/IoTOperationsDataProcessor.Management
- [ ] iotoperationsmq - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/iotoperationsmq/IoTOperationsMQ.Management
- [ ] iotoperationsorchestrator - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/iotoperationsorchestrator/IoTOperationsOrchestrator.Management
- [ ] liftrastronomer - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/liftrastronomer/Astronomer.Astro.Management
- [ ] liftrqumulo - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/liftrqumulo/Qumulo.Management
- [ ] mpcnetworkfunction - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/mpcnetworkfunction/MpcNetworkFunction.Management
- [ ] networkanalytics - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/networkanalytics/NetworkAnalytics.Management
- [ ] newrelic - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/newrelic/NewRelic.Management
- [ ] playwrighttesting - https://github.com/Azure/azure-rest-api-specs/tree/main/specification/playwrighttesting/PlaywrightTesting.Management

[XiaofeiCao]

Network Analytics:

1. MPG, migrate fluentgen modelerfour(/identity) naming settings to typespec-extension #2548
2. MPG, common model ManagedServiceIdentity defers between typespec-azure and azure-rest-api-specs #2549

[XiaofeiCao]

ContainerServiceFleet:

1. [MPG] Etag grouping into MatchConditions and RequestConditions #2633
2. mgmt sample generation, not generate x-ms-original-file if it's null #2620
3. [MPG] containerservicefleet, UpdateRunProperties got generated into UpdateRunPropertiesInner #2687

[weidongxu-microsoft]

A minor diff of DGP emitter is that it does not distinguish float32 and float64. It would always generate double.

[XiaofeiCao]

DeviceRegistry:

1. [MPG] models under xxUpdateProperties are not generated with Update suffix #2688

[XiaofeiCao]

devopsinfrastructure:

• [MPG] @format("uuid") should be generated as UUID in mgmt plane for brownfield #2766
• [MPG] ExpandableEnum as discriminator is not generated #2767