Azure-devtools

- Support Python 3.8.3 (https://github.com/Azure/azure-python-devtools/pull/65)
- Fix CI (https://github.com/Azure/azure-python-devtools/pull/64)
- Support float as size_kb in create_temp_file() (https://github.com/Azure/azure-python-devtools/pull/63)
- Support "\" while matching subscription string (https://github.com/Azure/azure-python-devtools/pull/58)

ci_tools
- clone_to_path now accepts PR number and SHA1 at the same time

- add ci_tools module. This includes some Git helpers, Github RestAPI wrapper and a Bot framework for Github issues.
- trim 'x-ms-authorization-auxiliary' header

Feature:

* Reverse the resource removal sequence.