Ball bearing escapes the round_tin_* meshes

[osrf-migration]

Original report (archived issue) by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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One of the ARAT tasks involves the ball_bearing interacting with the round_tin_* models. In my testing, the ball bearing easily escapes these models.

The ball_bearing has a radius of 3 mm, and the round tins have wall thickness of about 1 mm. We could potentially thicken the walls of the round_tin_* models and/or adjust the contact parameters.