base_image: add SELinux relabeling for Fedora virt-builder images #72

Job	Run time
Build kdevops Container (fedora)	2m 38s
Build kdevops Container (debian)	2m 41s
Build kdevops Container (opensuse)	1m 51s
Linux A/B Tests (debian)	1m 13s
Linux A/B Tests (fedora)	49s
Linux A/B Tests (opensuse)	51s
Quick Config Tests (blktests_nvme) on opensuse	49s
Quick Config Tests (lbs-xfs) on fedora	42s
Quick Config Tests (xfs_reflink_4k) on opensuse	57s
Quick Config Tests (linux-ab-testing) on fedora	43s
Quick Config Tests (xfs_reflink_4k) on debian	1m 3s
Quick Config Tests (xfs_reflink_4k) on fedora	47s
Quick Config Tests (blktests_nvme) on debian	57s
Quick Config Tests (linux-ab-testing) on opensuse	48s
Quick Config Tests (lbs-xfs) on debian	54s
Quick Config Tests (lbs-xfs) on opensuse	50s
Quick Config Tests (blktests_nvme) on fedora	46s
Quick Config Tests (linux-ab-testing) on debian	50s
	20m 9s

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