Enable sanitize for CI tests

Change-Id: I86f8f29dbe13869fa4a0ac1f55ff697a8975525b
diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
index 57954f0..d7a41a8 100755
--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -40,7 +40,7 @@
 
 cd "$base"
 autoreconf --install --force
-./configure --enable-vty-tests --enable-external-tests
+./configure --enable-sanitize --enable-vty-tests --enable-external-tests
 $MAKE $PARALLEL_MAKE
 LD_LIBRARY_PATH="$inst/lib" $MAKE check \
   || cat-testlogs.sh