Werk #15312: mk_oracle: use "${GREP}" instead of "grep"

Component Checks & agents
Title mk_oracle: use "${GREP}" instead of "grep"
Date Nov 27, 2023
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 2.2.0p16 2.3.0b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

When executed on solaris, "grep" does not know -x or -F. "${GREP}" points to a version of grep that understands those options.

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