title: Maven property not resolved in parent tag
body: <p>The following properties are not resolved:</p>
  
  <pre><code>&lt;properties&gt;
      &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
      &lt;java.version&gt;1.8&lt;/java.version&gt;
      &lt;spring.boot.version&gt;1.3.3.RELEASE&lt;/spring.boot.version&gt;
  &lt;/properties&gt;
  
  &lt;parent&gt;
      &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
      &lt;artifactId&gt;spring-boot-starter-parent&lt;/artifactId&gt;
      &lt;version&gt;${spring.boot.version}&lt;/version&gt;
      &lt;relativePath /&gt; &lt;!-- lookup parent from repository --&gt;
  &lt;/parent&gt;
  </code></pre>
  
  <blockquote>
    <p>Non-resolvable parent POM for com.myproject:0.0.1-SNAPSHOT: Failure to find org.springframework.boot:spring-boot-starter-parent:pom:${spring.boot.version}</p>
  </blockquote>
  
  <p>Does anyone know what do I do wrong?</p>