check: allow '-e testid' to exclude a single test

This enables us to mask off specific tests.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>

check

@@ -79,6 +79,7 @@ testlist options
     -g group[,group...]	include tests from these groups
     -x group[,group...]	exclude tests from these groups
     -X exclude_file	exclude individual tests
+    -e testlist         exclude a specific list of tests
     -E external_file	exclude individual tests
     [testlist]		include tests matching names in testlist
 
@@ -287,6 +288,11 @@ while [ $# -gt 0 ]; do
 
 	-X)	subdir_xfile=$2; shift ;
 		;;
+	-e)
+		xfile=$2; shift ;
+		echo "$xfile" | tr ', ' '\n\n' >> $tmp.xlist
+		;;
+
 	-E)	xfile=$2; shift ;
 		if [ -f $xfile ]; then
 			sed "s/#.*$//" "$xfile" >> $tmp.xlist