Connection error timeout on BlobClient upload_blob

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

### Which version of the SDK was used? Please provide the output of `pip freeze`.
astroid==2.3.3
azure-core==1.4.0
azure-functions==1.2.0
azure-storage-blob==12.3.0
certifi==2020.4.5.1
cffi==1.14.0
chardet==3.0.4
click==7.1.1
cryptography==2.9
fuzzywuzzy==0.18.0
idna==2.9
isodate==0.6.0
isort==4.3.21
joblib==0.14.1
lazy-object-proxy==1.4.3
mccabe==0.6.1
msrest==0.6.13
nltk==3.5
numpy==1.18.2
oauthlib==3.1.0
pandas==1.0.3
pdf2image==1.12.1
Pillow==7.1.1
pycparser==2.20
pylint==2.4.4
pytesseract==0.3.3
python-dateutil==2.8.1
pytz==2019.3
regex==2020.4.4
requests==2.23.0
requests-oauthlib==1.3.0
scikit-learn==0.22.2.post1
scipy==1.4.1
six==1.14.0
tqdm==4.45.0
typed-ast==1.4.1
urllib3==1.25.9
wrapt==1.11.2

### What problem was encountered?
the following line of code fails with trace from functions locally:
blobOutImage.upload_blob(imgByteArray, blob_type="BlockBlob", length=len(imgByteArray), overwrite=True, timeout=600)

[4/17/2020 4:03:42 PM] INFO: Received FunctionInvocationRequest, request ID: ac8b1935-32e4-4e2d-8cd2-3362e5c4430c, function ID: e4b6aa09-b4ba-463f-8e07-5dc2953aaf8a, invocation ID: fcc840c0-8f18-4912-876c-d449bce37582
[4/17/2020 4:03:42 PM] processInvoiceDS HTTP trigger function processed a request.
[4/17/2020 4:03:42 PM] Request URL: 'https://avidxsadvuno.blob.core.windows.net/microsoft-pdf/100682735.pdf'
[4/17/2020 4:03:42 PM] Request method: 'GET'
[4/17/2020 4:03:42 PM] Request headers:
[4/17/2020 4:03:42 PM] 'Accept': 'application/xml'
[4/17/2020 4:03:42 PM] 'x-ms-range': 'REDACTED'
[4/17/2020 4:03:42 PM] 'x-ms-version': 'REDACTED'
[4/17/2020 4:03:42 PM] 'x-ms-date': 'REDACTED'
[4/17/2020 4:03:42 PM] 'x-ms-client-request-id': '0286c11a-80c5-11ea-ab85-acde48001122'
[4/17/2020 4:03:42 PM] 'User-Agent': 'azsdk-python-storage-blob/12.3.0 Python/3.6.8 (Darwin-19.4.0-x86_64-i386-64bit)'
[4/17/2020 4:03:42 PM] 'Authorization': 'REDACTED'
[4/17/2020 4:03:43 PM] Response status: 206
[4/17/2020 4:03:43 PM] Response headers:
[4/17/2020 4:03:43 PM] 'Content-Length': '287226'
[4/17/2020 4:03:43 PM] 'Content-Type': 'application/pdf'
[4/17/2020 4:03:43 PM] 'Content-Range': 'REDACTED'
[4/17/2020 4:03:43 PM] 'Last-Modified': 'Sat, 25 Jan 2020 20:57:16 GMT'
[4/17/2020 4:03:43 PM] 'Accept-Ranges': 'REDACTED'
[4/17/2020 4:03:43 PM] 'ETag': '"0x8D7A1D928D43DF9"'
[4/17/2020 4:03:43 PM] 'Server': 'Windows-Azure-Blob/1.0 Microsoft-HTTPAPI/2.0'
[4/17/2020 4:03:43 PM] 'x-ms-request-id': 'REDACTED'
[4/17/2020 4:03:43 PM] 'x-ms-client-request-id': '0286c11a-80c5-11ea-ab85-acde48001122'
[4/17/2020 4:03:43 PM] 'x-ms-version': 'REDACTED'
[4/17/2020 4:03:43 PM] 'x-ms-creation-time': 'REDACTED'
[4/17/2020 4:03:43 PM] 'x-ms-blob-content-md5': 'REDACTED'
[4/17/2020 4:03:43 PM] 'x-ms-lease-status': 'REDACTED'
[4/17/2020 4:03:43 PM] 'x-ms-lease-state': 'REDACTED'
[4/17/2020 4:03:43 PM] 'x-ms-blob-type': 'REDACTED'
[4/17/2020 4:03:43 PM] 'Content-Disposition': 'REDACTED'
[4/17/2020 4:03:43 PM] 'x-ms-server-encrypted': 'REDACTED'
[4/17/2020 4:03:43 PM] 'Date': 'Fri, 17 Apr 2020 16:03:42 GMT'
[4/17/2020 4:03:43 PM] Download Azure BLOB completed in: Time Lapsed = 0:0:1.0637
[4/17/2020 4:03:47 PM] Image size too big. Downsizing.
[4/17/2020 4:03:47 PM] Image bytes before dowsize: 5088282
[4/17/2020 4:03:48 PM] Image bytes: 2922949
[4/17/2020 4:03:48 PM] Request URL: 'https://avidxsadvuno.blob.core.windows.net/preprocess-ds/img%2F100682735.png?timeout=REDACTED'
[4/17/2020 4:03:48 PM] Request method: 'PUT'
[4/17/2020 4:03:48 PM] Request headers:
[4/17/2020 4:03:48 PM] 'Content-Type': 'application/octet-stream'
[4/17/2020 4:03:48 PM] 'Content-Length': '2922949'
[4/17/2020 4:03:48 PM] 'x-ms-version': 'REDACTED'
[4/17/2020 4:03:48 PM] 'x-ms-blob-type': 'REDACTED'
[4/17/2020 4:03:48 PM] 'x-ms-date': 'REDACTED'
[4/17/2020 4:03:48 PM] 'x-ms-client-request-id': '061f40f4-80c5-11ea-8b62-acde48001122'
[4/17/2020 4:03:48 PM] 'User-Agent': 'azsdk-python-storage-blob/12.3.0 Python/3.6.8 (Darwin-19.4.0-x86_64-i386-64bit)'
[4/17/2020 4:03:48 PM] 'Authorization': 'REDACTED'
[4/17/2020 4:04:25 PM] Request URL: 'https://avidxsadvuno.blob.core.windows.net/preprocess-ds/img%2F100682735.png?timeout=REDACTED'
[4/17/2020 4:04:25 PM] Request method: 'PUT'
[4/17/2020 4:04:25 PM] Request headers:
[4/17/2020 4:04:25 PM] 'Content-Type': 'application/octet-stream'
[4/17/2020 4:04:25 PM] 'Content-Length': '2922949'
[4/17/2020 4:04:25 PM] 'x-ms-version': 'REDACTED'
[4/17/2020 4:04:25 PM] 'x-ms-blob-type': 'REDACTED'
[4/17/2020 4:04:25 PM] 'x-ms-date': 'REDACTED'
[4/17/2020 4:04:25 PM] 'x-ms-client-request-id': '061f40f4-80c5-11ea-8b62-acde48001122'
[4/17/2020 4:04:25 PM] 'User-Agent': 'azsdk-python-storage-blob/12.3.0 Python/3.6.8 (Darwin-19.4.0-x86_64-i386-64bit)'
[4/17/2020 4:04:25 PM] 'Authorization': 'REDACTED'
[4/17/2020 4:05:12 PM] Request URL: 'https://avidxsadvuno.blob.core.windows.net/preprocess-ds/img%2F100682735.png?timeout=REDACTED'
[4/17/2020 4:05:12 PM] Request method: 'PUT'
[4/17/2020 4:05:12 PM] Request headers:
[4/17/2020 4:05:12 PM] 'Content-Type': 'application/octet-stream'
[4/17/2020 4:05:12 PM] 'Content-Length': '2922949'
[4/17/2020 4:05:12 PM] 'x-ms-version': 'REDACTED'
[4/17/2020 4:05:12 PM] 'x-ms-blob-type': 'REDACTED'
[4/17/2020 4:05:12 PM] 'x-ms-date': 'REDACTED'
[4/17/2020 4:05:12 PM] 'x-ms-client-request-id': '061f40f4-80c5-11ea-8b62-acde48001122'
[4/17/2020 4:05:12 PM] 'User-Agent': 'azsdk-python-storage-blob/12.3.0 Python/3.6.8 (Darwin-19.4.0-x86_64-i386-64bit)'
[4/17/2020 4:05:12 PM] 'Authorization': 'REDACTED'
[4/17/2020 4:06:14 PM] Request URL: 'https://avidxsadvuno.blob.core.windows.net/preprocess-ds/img%2F100682735.png?timeout=REDACTED'
[4/17/2020 4:06:14 PM] Request method: 'PUT'
[4/17/2020 4:06:14 PM] Request headers:
[4/17/2020 4:06:14 PM] 'Content-Type': 'application/octet-stream'
[4/17/2020 4:06:14 PM] 'Content-Length': '2922949'
[4/17/2020 4:06:14 PM] 'x-ms-version': 'REDACTED'
[4/17/2020 4:06:14 PM] 'x-ms-blob-type': 'REDACTED'
[4/17/2020 4:06:14 PM] 'x-ms-date': 'REDACTED'
[4/17/2020 4:06:14 PM] 'x-ms-client-request-id': '061f40f4-80c5-11ea-8b62-acde48001122'
[4/17/2020 4:06:14 PM] 'User-Agent': 'azsdk-python-storage-blob/12.3.0 Python/3.6.8 (Darwin-19.4.0-x86_64-i386-64bit)'
[4/17/2020 4:06:14 PM] 'Authorization': 'REDACTED'
[4/17/2020 4:06:35 PM] ('Connection aborted.', timeout('The write operation timed out',))
### Have you found a mitigation/solution?
No

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