SLING-2987 - move SLING-2987 branch back under contrib/extensions, old code is tagged at https://svn.apache.org/repos/asf/sling/tags/healthcheck-before-SLING-2987

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1512257 13f79535-47bb-0310-9956-ffa450edef68
SLING-2987 - move SLING-2987 branch back under contrib/extensions, old code is tagged at https://svn.apache.org/repos/asf/sling/tags/healthcheck-before-SLING-2987

git-svn-id: https://svn.apache.org/repos/asf/sling/trunk@1512258 13f79535-47bb-0310-9956-ffa450edef68