Issue when generating a url using sas token. Method file_service.make_file_url()

### Which service(blob, file, queue) does this issue concern?
File share

### Which version of the SDK was used? Please provide the output of `pip freeze`.
azure-storage-file==2.0.1
azure-storage-common==2.0.0

### What problem was encountered?
https://github.com/Azure/azure-storage-python/blob/b8c5c9a1bc73065fd015c0fec75617cef263c6ee/azure-storage-file/azure/storage/file/fileservice.py#L233

When genrating a url using the method `make_file_url` passing a sas token, the generated url has two query strings ('?') instead of one.

The SaS Token generated on Azure portal starts with a query string.

### Have you found a mitigation/solution?
Yes. Remove the query string ('?') at line 233.

Note: for table service, please post the issue here instead: https://github.com/Azure/azure-cosmosdb-python.