[Storage] Support upload 4TB Azure file

[blueww]

Description

Upgrade Upload File cmdlet Set-AzStorageFileContent to Track2 SDK, so can upload file >1TB.
Also upgrade Az.Core to 1.6.0

Since the interface don't have any change, so don't need design review.

Checklist

• I have read the Submitting Changes section of CONTRIBUTING.md
• The title of the PR is clear and informative
• The appropriate ChangeLog.md file(s) has been updated:
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header -- no new version header should be added
• The PR does not introduce breaking changes
• If applicable, the changes made in the PR have proper test coverage
• For public API changes to cmdlets:
  • a cmdlet design review was approved for the changes in this repository (Microsoft internal only)
    • {Please put the link here}
  • the markdown help files have been regenerated using the commands listed here

[blueww]

@erich-wang
After merge the lastest commit from you, build and test pass, but static analysis fail since missing assemblies

/Users/runner/work/1/s/artifacts//StaticAnalysisResults/MissingAssemblies.csv:
"Directory","Assembly Name","Assembly Version","Referencing Assembly","Severity","ProblemId","Description","Remediation" "/Users/runner/work/1/s/artifacts/Debug/Az.Batch","System.Runtime.CompilerServices.Unsafe","4.0.4.0","Microsoft.Extensions.Primitives","0","3000","Missing assembly System.Runtime.CompilerServices.Unsafe referenced from Microsoft.Extensions.Primitives","Ensure that the assembly is included in the Wix file or directory" "/Users/runner/work/1/s/artifacts/Debug/Az.Batch","System.Text.Encodings.Web","4.0.3.0","Microsoft.AspNetCore.WebUtilities","0","3000","Missing assembly System.Text.Encodings.Web referenced from Microsoft.AspNetCore.WebUtilities","Ensure that the assembly is included in the Wix file or directory" "/Users/runner/work/1/s/artifacts/Debug/Az.Resources","System.Runtime.CompilerServices.Unsafe","4.0.4.0","Microsoft.Extensions.Primitives","0","3000","Missing assembly System.Runtime.CompilerServices.Unsafe referenced from Microsoft.Extensions.Primitives","Ensure that the assembly is included in the Wix file or directory"

Do you think the missing assemblies are OK? If so, I will add them to exception.

[blueww]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[blueww]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).