Problem with license file when running pip install .

[imatiach-msft]

Describe the bug
If user runs "pip install ." the installation fails with error:

error: [Errno 2] No such file or directory: 'LICENSE.txt'

The file needs to be copied from the directory above to the current directory to fix the build. Not sure how to optimally resolve this, one option may be to have duplicate license files.

[imatiach-msft]

Just had someone else hit this issue again. It doesn't occur from the pypi install, just the local "pip install ." command. Also it doesn't occur with "pip install -e .", and in fact "pip install -e ." seems to copy over the LICENSE.txt file and fix the issue.