settings-server-template.xml

        <server>
            <!-- This id must match the distributionManagement section in pom.xml -->
            <id>${MAVEN_REPO_SERVER_ID}</id>
            <username>${MAVEN_REPO_SERVER_USERNAME}</username>
            <!-- Credential stored in Travis CI -->
            <password>${MAVEN_REPO_SERVER_PASSWORD}</password>
            <privateKey>${MAVEN_REPO_SERVER_PRIVATE_KEY}</privateKey>
            <passphrase>${MAVEN_REPO_SERVER_PASSPHRASE}</passphrase>
        </server>