Werk #7614: perl-modules: Added missing modules IO/Socket

Component	Other components
Title	perl-modules: Added missing modules IO/Socket
Date	Dec 13, 2016
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.4.0i3 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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