Azure returns 'AuthenticationFailed (403)' if calling copy_blob after create_blob_snapshot

[AbelHu]

Azure returns 'AuthenticationFailed (403)' if calling copy_blob after create_blob_snapshot. If creating a new azure_client to call copy_blob, Azure returns success.

Code:
azure_client = Azure.client(storage_account_name: 'STORAGE-ACCOUNT', storage_access_key: 'STORAGE-KEY')
azure_client.storage_blob_host = 'https://STORAGE-ACCOUNT.blob.core.windows.net'
bs = azure_client.blobs
snapshot_time = bs.create_blob_snapshot(container_name, blob_name, {:metadata => metadata})
copy_id, copy_status = bs.copy_blob(container_name, snapshot_blob_name, container_name, blob_name, {:source_snapshot => snapshot_time})

Error logs:
/var/lib/gems/1.9.1/gems/azure-0.7.0/lib/azure/core/http/http_request.rb:150:in call': AuthenticationFailed (403): Server failed to authenticate the request. Make sure the value of Authorization header is formed correctly including the signature. (Azure::Core::Http::HTTPError) RequestId:54be9934-0001-0031-6c78-ef3e72000000 Time:2015-09-15T05:34:33.3173312Z from /var/lib/gems/1.9.1/gems/azure-0.7.0/lib/azure/core/http/signer_filter.rb:28:incall'
from /var/lib/gems/1.9.1/gems/azure-0.7.0/lib/azure/core/http/signer_filter.rb:28:in call' from /var/lib/gems/1.9.1/gems/azure-0.7.0/lib/azure/core/http/http_request.rb:97:inblock in with_filter'
from /var/lib/gems/1.9.1/gems/azure-0.7.0/lib/azure/core/service.rb:36:in call' from /var/lib/gems/1.9.1/gems/azure-0.7.0/lib/azure/core/filtered_service.rb:34:incall'
from /var/lib/gems/1.9.1/gems/azure-0.7.0/lib/azure/core/signed_service.rb:41:in call' from /var/lib/gems/1.9.1/gems/azure-0.7.0/lib/azure/blob/blob_service.rb:1380:incall'
from /var/lib/gems/1.9.1/gems/azure-0.7.0/lib/azure/blob/blob_service.rb:1209:in `copy_blob'

[yaxia]

Please update to the new storage gem for the fix. Thanks.