using short flags instead with validate

Signed-off-by: Zou Nengren <zouyee1989@gmail.com>

hack/make-rules/test-e2e-node.sh

@@ -165,7 +165,7 @@ else
     echo 'No need to refresh sudo credentials'
   else
     echo 'Updating sudo credentials'
-    sudo --validate || exit 1
+    sudo -v || exit 1
   fi
 
   # Do not use any network plugin by default. User could override the flags with

test/e2e_node/conformance/run_test.sh

@@ -34,7 +34,7 @@ elif sudo --non-interactive "$(which bash)" -c true 2> /dev/null; then
   echo 'No need to refresh sudo credentials'
 else
   echo 'Updating sudo credentials'
-  sudo --validate || exit 1
+  sudo -v || exit 1
 fi
 
 # FOCUS is ginkgo focus to select which tests to run. By default, FOCUS is