creating a container by python for the first time results in error sometimes

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

### Which version of the SDK was used? Please provide the output of `pip freeze`.
adal==1.2.1
applicationinsights==0.11.8
asn1crypto==0.24.0
astroid==2.2.5
azure-common==1.1.18
azure-graphrbac==0.61.0
azure-mgmt-authorization==0.51.1
azure-mgmt-containerregistry==2.7.0
azure-mgmt-keyvault==1.1.0
azure-mgmt-nspkg==3.0.2
azure-mgmt-resource==2.1.0
azure-mgmt-storage==3.1.1
azure-nspkg==3.0.2
azure-storage-blob==1.5.0
azure-storage-common==1.4.0
azureml-core==1.0.31
azureml-dataprep==1.1.2
azureml-dataprep-native==12.0.1
azureml-pipeline==1.0.31
azureml-pipeline-core==1.0.31
azureml-pipeline-steps==1.0.31
azureml-sdk==1.0.31
azureml-telemetry==1.0.31
azureml-train==1.0.31
azureml-train-core==1.0.31
azureml-train-restclients-hyperdrive==1.0.31
backcall==0.1.0
backports.tempfile==1.0
backports.weakref==1.0.post1
bcrypt==3.1.6
certifi==2019.3.9
cffi==1.12.2
chardet==3.0.4
colorama==0.4.1
contextlib2==0.5.5
cryptography==2.6.1
decorator==4.4.0
distro==1.4.0
docker==3.7.2
docker-pycreds==0.4.0
dotnetcore2==2.1.8
idna==2.8
ipykernel==5.1.0
ipython==7.4.0
ipython-genutils==0.2.0
isodate==0.6.0
isort==4.3.16
jedi==0.13.3
jeepney==0.4
jmespath==0.9.4
jsonpickle==1.1
jupyter-client==5.2.4
jupyter-core==4.4.0
lazy-object-proxy==1.3.1
mccabe==0.6.1
mkl-fft==1.0.10
mkl-random==1.0.2
msrest==0.6.6
msrestazure==0.6.0
ndg-httpsclient==0.5.1
numpy==1.16.2
oauthlib==3.0.1
pandas==0.24.2
paramiko==2.4.2
parso==0.4.0
pathspec==0.5.9
pickleshare==0.7.5
pipe==1.5.0
prompt-toolkit==2.0.9
py4j==0.10.7
pyarrow==0.13.0
pyasn1==0.4.5
pycparser==2.19
Pygments==2.3.1
PyJWT==1.7.1
pylint==2.3.1
PyNaCl==1.3.0
pyOpenSSL==19.0.0
pypiwin32==223
pyspark==2.4.2
python-dateutil==2.8.0
pytz==2019.1
pywin32==224
pyzmq==18.0.1
requests==2.21.0
requests-oauthlib==1.2.0
ruamel.yaml==0.15.89
scikit-learn==0.20.3
scipy==1.2.1
SecretStorage==3.1.1
six==1.12.0
sspipe==0.1.6
tornado==6.0.2
traitlets==4.3.2
typed-ast==1.3.1
urllib3==1.24.2
wcwidth==0.1.7
websocket-client==0.56.0
wincertstore==0.2
wrapt==1.11.1

### What problem was encountered?
I am trying to create a container using python in azure storage account. Please find the code used below.
When I run the function to create a container for the first time, it gives me the error

AzureMissingResourceHttpError: The specified container does not exist. ErrorCode: ContainerNotFound
ContainerNotFoundThe specified container does not exist.
RequestId:af0ea53c-401e-00f6-75b2-ff7c72000000
Time:2019-05-01T00:10:59.2735485Z

But when I run the same jupyter notebook cell for the second time it creates the container successfully.

Code Used to create container:

` def export_to_blob(p_df, container_name = None, relative_path = None, overwrite = True, show_progress = True, account_name = None, account_key = None):

block_blob_service = BlockBlobService(account_name = account_name, account_key = account_key)
container_name = container_name
block_blob_service.create_container(container_name)
block_blob_service.set_container_acl(container_name, public_access=PublicAccess.Container)`


I am able to reproduce the error by deleting the container created and running the jupyter cell again.

Please let me know if any further details is required.

### Have you found a mitigation/solution?
No

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

Start by reproducing the first-run failure with the shown BlockBlobService.create_container and set_container_acl sequence, then inspect the implementation and tests for those entry points. Determine why the first call reports ContainerNotFound while the second succeeds; done should include a confirmed fix and a regression test for creating a new container.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.