fence_aws: fixes to allow running outside of AWS network

[oalbrigt]

• add --skip-race-check parameter to allow running outside of AWS network e.g. for openshift
• fixed and improved logging logic
• use --debug-file parameter for file logging

[gguifelixamz]

@oalbrigt replacing "-verbose" with "--verbose-level" will cause backward compatibility issues? (i.e.: breaking where --verbose is being used?).

[oalbrigt]

@oalbrigt replacing "-verbose" with "--verbose-level" will cause backward compatibility issues? (i.e.: breaking where --verbose is being used?).

Yeah. I think I'll add a logfile parameter and rely on that instead of verbosity for this functionality.

[oalbrigt]

@gguifelixamz I updated it to use -D/--debug-file, and keep the formatting.

[gguifelixamz]

LGTM