[skip ci][script]: add script to download artifacts from azure pipeline

[lguohan]

Description of PR

Summary:
Fixes # (issue)

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Approach

What is the motivation for this PR?

fix sonic-net/sonic-buildimage#6717
add script to download artifacts from azure pipeline

How did you do it?

How did you verify/test it?

usage: getbuild.py [-h] [--buildid buildid] [--branch branch] [--platform platform] [--content content]

Download artifacts from sonic azure devops.

optional arguments:
  -h, --help           show this help message and exit
  --buildid buildid    build id
  --branch branch      branch name
  --platform platform  platform to download
  --content content    download content type [all|image(default)]

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation

[yxieca]

/Azurepipelines run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).