[Popper] - [ investigate enable flip behavior for diagonal positioning]

[tlabaj]

Is this a new component or an extension of an existing one?
What is the existing component, if any?
Popper.

Describe the feature
A clear and concise description of the new feature. What is the expected behavior?
Investigate enabling flip behavior for diagonal positioning by updating "fallbackPlacements"
https://popper.js.org/docs/v2/modifiers/flip/#fallbackplacements

[blfetche]

Hello @tlabaj per todays discussing linking in the below issue as this issue may offer a better solution to 4754

Original Issue: patternfly/patternfly#4754

@mcoker