Fix flaky spin, backup behavior test

[SteveMacenski]

Test removed so that CI is green for contributors. Rewriting this test completely is probably required, this is over complicated, fragile, and tries to fake out / bypass parts of things I don't really understand why. We should just populate a costmap, call the server, check results and call it a day.

Removed in: #4348

Rewrite the behavior tests using GZ, the Simple Commander API and call this a day.

• spin
• backup
• drive on heading
• wait
• teleop

[SteveMacenski]

Done in #4515