sepolicy: fix 28.0.ignore.cil build

29.0.ignore.cil/29.0.cil should be expanded into
28.0.ignore.cil/28.0.cil, so that there is no need to duplicate changes
in both places.

Test: adding a type to 29.0.ignore.cil/29.0.cil only doesn't trigger a
build error.
Change-Id: I543c0fc5e3749211e5bede81aabb0b520435a510
1 file changed