void deleteNode_ignoreNoNodeException(String path) {
        try {
            curator.framework().delete().forPath(path);
        } catch (KeeperException.NoNodeException e) {
            // ok
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
ZooKeeper implementation of {@link ApplicationLock}.

@author hakonhall
orchestrator/src/main/java/com/yahoo/vespa/orchestrator/status/ZkApplicationLock.java