Use relesed version of sling.api (2.6.0 is required)

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1574429 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release org.apache.sling.resourcecollection-1.0.0

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1574430 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1574433 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release org.apache.sling.resource.inventory-1.0.0

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1574435 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1574437 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release org.apache.sling.jmx.provider-1.0.0

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1574438 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare for next development iteration

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1574440 13f79535-47bb-0310-9956-ffa450edef68
[maven-release-plugin] prepare release org.apache.sling.resourcemerger-1.1.0

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1574441 13f79535-47bb-0310-9956-ffa450edef68