.travis-deploy-settings.xml

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
  <servers>
    <server>
      <id>OSGi Releases</id>
      <username>${env.REPOSITORY_USERNAME}</username>
      <password>${env.REPOSITORY_PASSWORD}</password>
    </server>
    <server>
      <id>OSGi Snapshots</id>
      <username>${env.REPOSITORY_USERNAME}</username>
      <password>${env.REPOSITORY_PASSWORD}</password>
    </server>
  </servers>
</settings>