In a PATCH operation supportsHttpsTrafficOnly property for StorageAccountPropertiesUpdateParameters should not have a default value

request body for PATCH operation MUST not have default values for properties.
Please refer to the node sdk issue filed by a customer https://github.com/Azure/azure-sdk-for-node/issues/2390#issuecomment-358713353.

Specs with api-version 2016-12-01, 2017-06-01 and 2017-10-01 need to be corrected as this will affect sdks with multi api version support.
Folks from the service team:
@bluww @JasonYang-MSFT

Folks from SDK Team: FYI
@shahabhijeet @sarangan12 @marstr @lmazuel @jianghaolu.

NOTE: If your SDK supports not setting default values in request body of a PATCH operation then you are fine.

Locate the StorageAccountPropertiesUpdateParameters definitions for API versions 2016-12-01, 2017-06-01, and 2017-10-01 in the REST specifications, then inspect the PATCH request schemas for supportsHttpsTrafficOnly. Done means those PATCH schemas no longer assign a default value to that property in all three versions.

Written by the indexing model from the issue text.