Fix executor/docker/machine.testMachine data races
What does this MR do?
A bunch of test only data races.
- Data Race in function executors/docker/machine.(*testMachine).Create() - #2912 (closed)
- Data Race in function executors/docker/machine.(*testMachine).Exist() - #2918 (closed)
- Data Race in function executors/docker/machine.(*testMachine).Remove() - #2919 (closed)
- Data Race in function executors/docker/machine.(*testMachine).List() - #2920 (closed)
What are the relevant issue numbers?
- Closes #2912 (closed)
- Closes #2918 (closed)
- Closes #2919 (closed)
- Closes #2920 (closed)