ifcfg-rh: preserve existence of wired setting
Currently the plugin doesn't preserve the existence of a wired setting because the writer saves only variables with non-default values and, especially, the reader always creates the setting. Fix this; now the writer writes HWADDR even if empty when the setting is present; the reader creates the setting when at least one property is found.
Showing with 159 additions and 80 deletions
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Result: STABLE: All tests passing
Passed: 909, Failed: 0