Werk #2766: juniper_fru: Don't discover devices reported as "empty"

Component	Checks & agents
Title	juniper_fru: Don't discover devices reported as "empty"
Date	Nov 13, 2015
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.7i4 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.2.8b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

The check was discovering empty device slots as checks and always reporting them as being critical. The discovery has been disabled for these units.

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