Commit partial changes.
Added unit test cases for create/delete/list shares/files/directories.
Merge branch 'dev'
BUG: 1760998 - [PowerShell for XSMB] Cannot access file service when -Environment is specified for new-azurestoragecontext

Fixed a merging issue where file endpoint is set null when specifying -Environment.
Merge branch 'dev'
Merge branch 'upstream/dev'
Merge branch 'dev'
Refactored DM wrapper to allow mock up.
Added unit test cases for upload/download files.
Merge branch 'upstream/dev'
Resolved merge issues of AzureStorageContext moving.
Added unit test cases for WindowsAzureEnvironment as requested.
add the help content for file commands
Merge branch 'dev' of https://github.com/flyrobin/azure-sdk-tools.git
Worked around DM lib bug 1887176 which would hangs the cmdlet when providing uri for the source blob and the dest blob exists with a different blob type during copy blob operations.
Merge format file and types file.
Updated setup file and module definition.
Moved unit test cases for WindowsAzureEnvironment to requested position.
Resolve build issues that missed two module files in wxi definition.
Remove AzureResourceManager.psd1 manually from wxi file
Revert "Remove AzureResourceManager.psd1 manually from wxi file"

This reverts commit 2552be065695961deadafa9f40245978f8a66c6c.