Merge pull request #331 from CESNET/v5.7.0 #533

Job	Run time
check / editor-config	10s
check / clang-checks	1m 17s
build-os-matrix	4s
build (oraclelinux:10) / build	2m 1s
rpm-build (oraclelinux:10) / rpm-build	5m 5s
make-tests (oraclelinux:10) / tests	1m 39s
rpm-install (oraclelinux:10) / rpm-install	1m 10s
ipfix-elements-check / ipfix-elements-checks	36s
	12m 2s

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