Crash when calling SchedulerStoreSvc.GetClientVersion() in some scenarios

#### Problem Description

In some scenarios, for example when publishing as `PublishSingleFile` a call to `StoreServer.RegisterWithServer()` can throw an exception:

```
---> System.ArgumentException: The path is empty. (Parameter 'path')
at System.IO.Path.GetFullPath(String path)
at System.Diagnostics.FileVersionInfo.GetVersionInfo(String fileName)
at Microsoft.Hpc.Scheduler.Store.SchedulerStoreSvc.GetClientVersion()
at Microsoft.Hpc.Scheduler.Store.SchedulerStoreSvc..cctor()
--- End of inner exception stack trace ---
at Microsoft.Hpc.Scheduler.Store.SchedulerStoreSvc.get_ClientVersion()
at Microsoft.Hpc.Scheduler.Store.StoreServer.RegisterWithServer()
at Microsoft.Hpc.Scheduler.Store.StoreServer.RegisterEvent(String schedulerNode)
at Microsoft.Hpc.Scheduler.Store.StoreServer.ConnectWcfAsync(CancellationToken token)
at Microsoft.Hpc.Scheduler.Store.StoreServer.InternalConnectAsync(CancellationToken token, ConnectMethod method)
at Microsoft.Hpc.Scheduler.Store.StoreServer.ConnectAsync(StoreConnectionContext context, CancellationToken token, ConnectMethod method)
at Microsoft.Hpc.Scheduler.Store.SchedulerStoreSvc.InitializeAsync(CancellationToken token, ConnectMethod method)
at Microsoft.Hpc.Scheduler.Store.SchedulerStoreSvc.RemoteConnectAsync(StoreConnectionContext context, CancellationToken token, ConnectMethod method)
at Microsoft.Hpc.Scheduler.Store.SchedulerStore.ConnectAsync(StoreConnectionContext context, CancellationToken token, ConnectMethod method)
at Microsoft.Hpc.Scheduler.Scheduler.ConnectAsync(SchedulerConnectionContext context, CancellationToken token, ConnectMethod method)
```

The problem is that `SchedulerStoreSvc.GetClientVersion()` call `Assembly.GetExecutingAssembly().Location` that can return an empty string.

It can easily be fixed using a different approach:

```csharp
//Crash because [.Location] is an empty string
var versionInfo = FileVersionInfo.GetVersionInfo(Assembly.GetExecutingAssembly().Location);

//Works even when published as PublishSingleFile
var versionInfo = Assembly.GetExecutingAssembly().GetName().Version;
```

#### Steps to Reproduce
Publish an application as `PublishSingleFile` and try to connet to any server.

#### Expected Results
Connection successfull

#### Actual Results
Crash