[BUG] Web App Service Logs Retention Days not set for Application Logging

Reference this issue: https://github.com/Azure/azure-sdk-for-net/issues/9222

There are two log config classes here, ApplicationLogsConfig stands for Application Logging, and HttpLogsConfig stands for Web Server Logging.

Code snippet to set Application Logging Retention Days

         .WithApplicationLogging()
                .WithLogLevel(LogLevel.Verbose)
                .WithApplicationLogsStoredOnStorageBlob("sasToken")
                .WithLogRetentionDays(30)

Code snippet to set Web Server Logging Retention Days

     .WithWebServerLogging()
                .WithWebServerLogsStoredOnStorageBlob("sasToken")
                .WithLogRetentionDays(30)

Both above code snippets end up to call the same method WebAppDiagnosticLogsImpl(code as below).

 public WebAppDiagnosticLogsImpl<FluentT, FluentImplT, DefAfterRegionT, DefAfterGroupT, UpdateT> WithLogRetentionDays(int retentionDays)
        {
            if (Inner.HttpLogs != null && Inner.HttpLogs.FileSystem != null && Inner.HttpLogs.FileSystem.Enabled.HasValue && Inner.HttpLogs.FileSystem.Enabled.Value)
            {
                Inner.HttpLogs.FileSystem.RetentionInDays = retentionDays;
            }
            if (Inner.HttpLogs != null && Inner.HttpLogs.AzureBlobStorage != null && Inner.HttpLogs.AzureBlobStorage.Enabled.HasValue && Inner.HttpLogs.AzureBlobStorage.Enabled.Value)
            {
                Inner.HttpLogs.AzureBlobStorage.RetentionInDays = retentionDays;
            }
            return this;
        }

This method updates Retention Days of HttpLogsConfig. It should not update Retention Days of Application Logging, right? Update Retention Days of Application Logging should use ApplicationLogsConfig, right?

[yaohaizh]

@yungezz

[weidongxu-microsoft]

next release would be 1.34.1