Fix retry timeout when running under debugger

[yevhen]

Debugging Orleans in Compute Emulator almost always gives this error:

Exception thrown: 'System.TimeoutException' in Orleans.dll
Microsoft.WindowsAzure.ServiceRuntime Critical: 31337 : System.TimeoutException: Task.WaitWithThrow has timed out after 00:00:03.
   at Orleans.OrleansTaskExtentions.WaitWithThrow(Task task, TimeSpan timeout)
   at Orleans.AzureUtils.OrleansSiloInstanceManager.RegisterSiloInstance(SiloInstanceTableEntry entry)
   at Orleans.Runtime.Host.AzureSilo.Start(ClusterConfiguration config, String deploymentId, String connectionString)
   at Example.Azure.Program.OnStart() in C:\Work\OSS\Orleankka\Source\Example.Azure.Cluster\Program.cs:line 26
   at Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment.InitializeRoleInternal(RoleType roleTypeEnum)
   at Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment.InitializeRole(RoleType roleType)
   at Microsoft.WindowsAzure.ServiceRuntime.Implementation.Loader.RoleRuntimeBridge.<InitializeRole>b__0()

The longer timeout which set in case the Orleans is running under debugger was ignored due to code mistakenly put into #if DEBUG, which was ruling it out from release binaries.

[sergeybykov]

Thank you, @yevhen!