Unexpected spacing below topology toolbar

Description of problem:

The topology use a PatternFly toolbar component to render its toolbar. It looks like the latest version uses a grid and flex layout which adds an addtional spacing below the toolbar.

Prerequisites (if any, like setup, operators/versions):

None

Steps to Reproduce

1. Open developer console
2. Check topology toolbar design

Actual results:

There is a spacing below the toolbar (Display options, Filter by resource, Filter by name), see attached screenshot.

Expected results:

No additional spacing below the toolbar. (See screenshot of 4.8)

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

4.9 master, tested with commit 3c6537eec4f5c165cf214c4100bddeccc104ed44

Additional info:

Maybe this is a patternfly issue, or we should check if the second div in the toolbar should not be rendered. See attached screenshot.