Add fixed object radius and increase run speed

[vtommasini]

Proposed changes

Changed the OuterRadius of ObjectA and ObjectB from 6.683 to 6.0, as we found this to be the working limit so as to avoid having the constraints blow up. We have also changed all 5 of the UpdateFraction in ControlSystems from 0.03 to 0.3 to considerable increase the speed of the simulation. A full merger takes ~2 days.

Code review checklist

• [ ] The code is documented and the documentation renders correctly. Run make doc to generate the documentation locally into BUILD_DIR/docs/html. Then open index.html.
• [ ] The code follows the stylistic and code quality guidelines listed in the code review guide.
• [ ] The PR lists upgrade instructions and is labeled bugfix or new feature if appropriate.

[nilsvu]

@vtommasini please squash your commits into one

[nilsvu]

Test failure is unrelated

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