Add optional :logger to LinuxAdmin.run and run!

[jrafanie]

This should do the following:

1. rescue any exceptions
2. log the command, minus any params
3. log the output as info
4. log the exit code as error when non-zero
5. log standard error as error if exit code is non-zero, warn otherwise.
6. re-raise the existing exception

[carbonin]

@bdunne This can also most likely be closed as run and run! have been moved to the AwesomeSpawn gem and as of #148 will no longer be callable from LinuxAdmin

[miq-bot]

This issue has been automatically marked as stale because it has not been updated for at least 3 months.

If you can still reproduce this issue on the current release or on master, please reply with all of the information you have about it in order to keep the issue open.

Thank you for all your contributions! More information about the ManageIQ triage process can be found in the traige process documentation.