Fix printer.py to handle when sharing is off #388
Merged
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As promised the Printer script fixed. No longer shall the preflight script exit 1.
I got a little lazy and only tested in 10.6, 10.7, 10.9 and 10.11. Even if 10.8 and 10.10 are different the exception for KeyError should cover us.
The 'shared' key is better as it is present on 10.6-10.11 while the 'printersharing' key was only on later OS releases.
Also linted the script while it was open.