title: Jgitflow plugin not creating git tags
body: <p>I have the following jgitflow plugin and use Jenkins to perform automated releases. Using the command <code>mvn --batch-mode  jgitflow:release-start jgitflow:release-finish</code>. Everything is working however, I never see any tags in github. As per the docs unless notags is used all my releases should create tags. Any idea what is going wrong? </p>
  
  <pre><code>&lt;plugin&gt;
      &lt;groupId&gt;external.atlassian.jgitflow&lt;/groupId&gt;
      &lt;artifactId&gt;jgitflow-maven-plugin&lt;/artifactId&gt;
      &lt;version&gt;1.0-m4.3&lt;/version&gt;
      &lt;configuration&gt;
          &lt;flowInitContext&gt;
              &lt;masterBranchName&gt;release&lt;/masterBranchName&gt;
              &lt;developBranchName&gt;master&lt;/developBranchName&gt;
              &lt;releaseBranchPrefix&gt;release-&lt;/releaseBranchPrefix&gt;
              &lt;versionTagPrefix&gt;release-&lt;/versionTagPrefix&gt;
          &lt;/flowInitContext&gt;
          &lt;noReleaseMerge&gt;true&lt;/noReleaseMerge&gt;
      &lt;/configuration&gt;
  &lt;/plugin&gt;
  </code></pre>
  
  <p>Using release-start and finish separately did not help either. See below:</p>
  
  <pre><code>mvn --batch-mode  jgitflow:release-start -Dmaven.javadoc.skip=true -DskipTests
  git push --tags
  Everything up-to-date
  </code></pre>