NXCals: work around issue caused by .sys.. files appearing on EOS

To run the testing, add a comment with:

Bot test PACKAGE[ PACKAGE2 ...]|all in TOOLCHAIN|all [(only|also) for ARCH-LABEL-COMPILER-BUILDTYPE] please!

later followed by

Bot repeat please!

To ensure patches required for existing LCG branches are not lost, please add the respective labels: alsoTargeting:LCG_102-patches, alsoTargeting:master, etc.

added test-needed label

enabled an automatic merge when all merge checks for f2ab48a2 pass

merged

mentioned in commit 8ebb713c

added sweep:ignore label