refactor: use a long version of set's options

Author: php-coder

src/main/scripts/ci/ansible/deploy.yml

@@ -40,7 +40,8 @@
   # The command to execute JVM is similar to ExecStart from /etc/systemd/system/mystamps.service
   - name: Ensuring whether Liquibase migrations are valid
     shell: |
-      set -eu
+      set -o nounset
+      set -o errexit
       set -o pipefail
       eval "$(sed -n '/^[A-Z]/s||export &|p' mystamps.conf)"
       java $JAVA_OPTS -jar mystamps-candidate.war liquibase validate