stop oak-core bundle only transiently on lease failure

Since OAK-3397 the oak-core bundle is stopped (via bundle.stop();) when the lease with the document store times out (ie lease failed to be updated in time). Using bundle.stop(); leads to an unwanted side-effect, namely that it changes and persists the autostart settings of the bundle. Ie on next startup the oak-core bundle will not automatically start.

Using bundle.stop(Bundle.STOP_TRANSIENT); would avoid this and achieve exactly what was the original intension: to stop the bundle (temporarily) until restart