Use specific .NET runtime version #9189

Job	Run time
windows-installers / build	5m 15s
containers / servicecontrol-monitoring	17s
containers / servicecontrol-audit	26s
containers / servicecontrol	23s
db-container / db-container	53s
Linux-PrimaryRavenAcceptance	11m 45s
Linux-IBMMQ	3m 30s
Linux-AzureStorageQueues	4m 11s
Linux-PostgreSQL	5m 24s
Windows-AzureServiceBus	11m 8s
Windows-Default	14m 5s
Windows-MSMQ	4m 41s
Windows-RabbitMQ	11m 2s
Windows-AzureStorageQueues	5m 45s
Windows-PostgreSQL	6m 6s
Linux-RabbitMQ	8m 17s
Linux-SqlServer	4m 10s
Linux-Default	10m 50s
Windows-SqlServer	9m 13s
Windows-PrimaryRavenPersistence	6m 42s
Linux-AzureServiceBus	9m 43s
Linux-SQS	4m 4s
Windows-SQS	6m 48s
Windows-PrimaryRavenAcceptance	13m 5s
Linux-PrimaryRavenPersistence	4m 40s
container-test	0s
	2h 42m 23s

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