Make default test group settings configurable in scenario settings

[damies13]

Is your feature request related to a problem? Please describe.

Idea is to configure at a scenario level the default values for the test group settings

Describe the solution you'd like
For example you have a test with 10 test groups and you want to set the Exclude libraries setting for all scripts with the same value, rather than configuring the setting for each individual test group settings as you would now, it would be better to be able to set it at the scenario level so it can be set once and applied to all tests.

Additional context

• Exclude libraries
• Robot Options
• new setting related to Issue Enable test to be re-run in the same test suite #133
• new setting related to Issue Option to tell robot not to create the html & xml logs  #151
• new setting related to Issue Option in the settings to alter the behaviour to report the keyword name #154

[damies13]

Existing Test group settings can now have their default values configured in the scenario settings.

• Exclude libraries
• Robot Options

This provides a template for new setting as needed, the 3 mentioned in this issue as well as others as they get created.

Issue #163 is resolved and merged into release branch v1.2.0