SLING-3904 : Update to latest maven scr and bundle plugin

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1622025 13f79535-47bb-0310-9956-ffa450edef68
Update to latest parent pom 20

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1622026 13f79535-47bb-0310-9956-ffa450edef68
Update to latest parent pom 20

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1622027 13f79535-47bb-0310-9956-ffa450edef68
Update to latest parent pom 20

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1622028 13f79535-47bb-0310-9956-ffa450edef68
Update to latest parent pom 20

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1622029 13f79535-47bb-0310-9956-ffa450edef68
Update to latest parent pom 20

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1622030 13f79535-47bb-0310-9956-ffa450edef68