test: Verify DNS and ping still work

Signed-off-by: Wen Liang <[email protected]>

tests/playbooks/tests_bond.yml

@@ -123,3 +123,16 @@
               when:
                 - network_provider == "initscripts"
               changed_when: false
+            - name: Verify DNS and ping still work
+              shell: |
+                set -euxo pipefail
+                for host in mirrors.fedoraproject.org mirrors.centos.org; do
+                  if ! getent hosts "$host"; then
+                    exit 1
+                  fi
+                  if ! ping "$host"; then
+                    exit 1
+                  fi
+                done
+              when: ansible_facts["distribution"] == "CentOS"
+              changed_when: false