Removed useless Import-Package, and committed the apacheds 155 pom.xml file

git-svn-id: https://svn.apache.org/repos/asf/directory/studio/branches/studio-tycho@1630145 13f79535-47bb-0310-9956-ffa450edef68
Added apacheds 156 plugin

git-svn-id: https://svn.apache.org/repos/asf/directory/studio/branches/studio-tycho@1630153 13f79535-47bb-0310-9956-ffa450edef68
Added the apacheds 157 plugin

git-svn-id: https://svn.apache.org/repos/asf/directory/studio/branches/studio-tycho@1630159 13f79535-47bb-0310-9956-ffa450edef68