kselftests: Sort the collections list to avoid duplicate tests

If the collections list is not sorted uniq doesn't weed out duplicate
tests correctly. Make sure to sort it before running uniq.

Signed-off-by: Rishabh Bhatnagar <risbhat@amazon.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>

tools/testing/selftests/run_kselftest.sh

@@ -90,7 +90,7 @@ if [ -n "$TESTS" ]; then
 	available="$(echo "$valid" | sed -e 's/ /\n/g')"
 fi
 
-collections=$(echo "$available" | cut -d: -f1 | uniq)
+collections=$(echo "$available" | cut -d: -f1 | sort | uniq)
 for collection in $collections ; do
 	[ -w /dev/kmsg ] && echo "kselftest: Running tests in $collection" >> /dev/kmsg
 	tests=$(echo "$available" | grep "^$collection:" | cut -d: -f2)