Chore: Updates to improve overall robustness of robot framework tooling

Improved scripts to better meet modern coding best practices. Improved
many script functions and behaviours to allow some code to run outside
Jenkins jobs. Addressed many warnings produced by linting tools.

Issue-ID: CCSDK-3820
Signed-off-by: Matthew Watkins <mwatkins@linuxfoundation.org>
Change-Id: I2e4f702a0b58cbace341c31669b4ffcb023d499c
3 files changed