tests: build SELinux tests
tests: build SELinux tests

We set WITH_LIBATTR in meson.build, not WITH_ATTR.

Also link securityselinuxlabeltest with test_qemu_driver_lib.

Signed-off-by: Ján Tomko <4cab11cfb98d3c937327354a78eb07dbb6ee2bc6@redhat.com>
Fixes: 3ace72965c3b11fc763f781ae7ce3ca29dd36507
Reviewed-by: Peter Krempa <2cf5c04c61aa466e4a47bfedc747d17279c72ffc@redhat.com>

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