CCBC-472: update ht_nodes when receiving new config
CCBC-472: update ht_nodes when receiving new config

This lets lcb_get_server_list work properly to receive new nodes

Change-Id: I5b4a06c5a83f0f5db5f21e89ec4bd6195cc9d6a4
Reviewed-on: http://review.couchbase.org/39158
Tested-by: Mark Nunberg <e7d42768707bf23038325b0b68d4b577e5f6064a@haskalah.org>
Reviewed-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>

maxim-ky/libcouchbase,couchbase/libcouchbase,signmotion/libcouchbase,senthilkumaranb/libcouchbase,kojiromike/libcouchbase,avsej/libcouchbase,mnunberg/libcouchbase,senthilkumaranb/libcouchbase,PureSwift/libcouchbase,mnunberg/libcouchbase,signmotion/libcouchbase,maxim-ky/libcouchbase,PureSwift/libcouchbase,mnunberg/libcouchbase,signmotion/libcouchbase,signmotion/libcouchbase,kojiromike/libcouchbase,avsej/libcouchbase,couchbase/libcouchbase,senthilkumaranb/libcouchbase,avsej/libcouchbase,mody/libcouchbase,PureSwift/libcouchbase,couchbase/libcouchbase,PureSwift/libcouchbase,couchbase/libcouchbase,mody/libcouchbase,kojiromike/libcouchbase,couchbase/libcouchbase,maxim-ky/libcouchbase,kojiromike/libcouchbase,couchbase/libcouchbase,mnunberg/libcouchbase,avsej/libcouchbase,avsej/libcouchbase,maxim-ky/libcouchbase,senthilkumaranb/libcouchbase,avsej/libcouchbase,mnunberg/libcouchbase,mody/libcouchbase,couchbase/libcouchbase,avsej/libcouchbase,mody/libcouchbase