controllers/cpuset: Make mount failure TCONF

It appears that if the subsystem is available under V2 then mounting
the V1 can fail. Probably when the V2 has processes assigned to a
group it controls.

The test should scan the system and find the existing CGroup
hierarchies and work with those. This can be done by converting the
test to tst_cgctl or rewriting it in C. It's not clear what the best
course of action would be.

For now, this commit just changes the result to TCONF.

Signed-off-by: Richard Palethorpe <[email protected]>
Reviewed-by: Petr Vorel <[email protected]>

testcases/kernel/controllers/cpuset/cpuset_funcs.sh

@@ -165,8 +165,7 @@ setup()
 	mount -t cgroup -o cpuset cpuset "$CPUSET" 2> /dev/null
 	if [ $? -ne 0 ]; then
 		cleanup
-		tst_brkm TFAIL "Could not mount cgroup filesystem with"\
-					" cpuset on $CPUSET..Exiting test"
+		tst_brkm TCONF "Could not mount cgroup filesystem with cpuset on $CPUSET"
 	fi
 
 	CHILDREN_VALUE="`cat $CLONE_CHILDREN`"