Chore: Re-instate robotframework-requests==0.9.3

Need to re-instate a pinned version for the Python test suite.
Also we can add back the backup installation method from the script
in ci-management.

Signed-off-by: Matthew Watkins <mwatkins@linuxfoundation.org>
Change-Id: If0ec07edb1c156b06a9c2621a4e22bd35b9240a9
3 files changed