Werk #6550: Fixed warning "bad ps syntax" when stopping a site on e.g. SLES11

Component Site management
Title Fixed warning "bad ps syntax" when stopping a site on e.g. SLES11
Date Sep 5, 2018
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 1.5.0p4 1.6.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

When using older ps versions like procps 3.2.7, which is used e.g. on SLES11, a warning message like this was displayed when executing "omd stop" on a site:

Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html Stopping 1 remaining site processes...OK

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