feat: Add --extra-vars option defined by variable

This will allow you to define the variables during runtime whose values
you may want to override. In this case, we want to override the DNS
config related to nameserver and search domain

.gitlab-ci.yml

@@ -152,7 +152,7 @@ deploy_http_proxy_node:
       git clone ${CI_REPOSITORY_URL} /tmp/${CI_PROJECT_NAME}
       cd /tmp/${CI_PROJECT_NAME}
       git checkout ${CI_COMMIT_REF_NAME}
-      ansible-playbook -c local -i 127.0.0.1, ansible/cheaha.yml | tee -a /tmp/ansible.log
+      ansible-playbook -c local -i 127.0.0.1, --extra-vars="$EXTRA_VARS" ansible/cheaha.yml | tee -a /tmp/ansible.log
       rm -rf /tmp/${CI_PROJECT_NAME}
       EOF
     - >
@@ -200,7 +200,7 @@ deploy_ssh_proxy_node:
       git clone ${CI_REPOSITORY_URL} /tmp/${CI_PROJECT_NAME}
       cd /tmp/${CI_PROJECT_NAME}
       git checkout ${CI_COMMIT_REF_NAME}
-      ansible-playbook -c local -i 127.0.0.1, ansible/cheaha.yml | tee -a /tmp/ansible.log
+      ansible-playbook -c local -i 127.0.0.1, --extra-vars="$EXTRA_VARS" ansible/cheaha.yml | tee -a /tmp/ansible.log
       rm -rf /tmp/${CI_PROJECT_NAME}
       EOF
     - >