new: fix template for new case to use a single tab not four spaces

So we have preferred code style for all new test cases.

Signed-off-by: Eryu Guan <eguan@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

new

@@ -148,8 +148,8 @@ trap "_cleanup; exit \\\$status" 0 1 2 3 15
 
 _cleanup()
 {
-    cd /
-    rm -f \$tmp.*
+	cd /
+	rm -f \$tmp.*
 }
 
 # get standard environment, filters and checks