MB-23597: reload app in case poolDefault is unreacheble
MB-23597: reload app in case poolDefault is unreacheble

Change-Id: I03726625d71ecdf5ad2b005ae22b8f2d258b78fe
Reviewed-on: http://review.couchbase.org/76943
Tested-by: Pavel Blagodov <596b71e626fc58dbdad141b817770e3e4810bb9b@gmail.com>
Reviewed-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>

membase/ns_server,membase/ns_server,membase/ns_server,membase/ns_server,membase/ns_server,membase/ns_server