public CompletionWaiter getRemoveApplicationWaiter(ApplicationId applicationId) {
        return curator.getCompletionWaiter(barrierPath(applicationId), serverId, waitForAll);
    }
Given baseIdSegment search/ and id search/container/default.0, return search/container
@return id segment with one extra level from the id appended
configserver/src/main/java/com/yahoo/vespa/config/server/application/TenantApplications.java