Security update for various KMPs

The Spectre Variant 2 in the Linux Kernel is mitigated using "retpolines".

This update rebuilds all openSUSE Leap 42.3 KMPs to use "retpolines" and so
be able to mitigate the Spectre v2 attack. (bsc#1068032 CVE-2017-5715)

Fixed bugs
bnc#1068032
VUL-0: CVE-2017-5715: speculative side channel attacks on various CPU platforms aka "SpectreAttack" and "MeltdownAttack"
Selected Binaries
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