checkMachineRunning invalid filter

[Denis-Sidorov]

Hello,

There is a bug with checkMachineRunning when a machine list contains a machine in "error" state.

e.g.:

Reproduce steps:

1. Create 2 machines
2. Stop the second machine and remove its config
3. Try to start the second machine. It will be in the error state
4. Try to filter the first machine by name: docker-machine ls motivation --filter "Name=motivation" --format "{{.State}}"

It will show 2 states: Running and Error: