Preserve command_data between attempts
Preserve command_data between attempts

Change-Id: Ib108c129d9cc88dbc3f7ed162a4bf0e74f0b2796
Reviewed-on: http://review.couchbase.org/18588
Tested-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>
Reviewed-by: Trond Norbye <60edd2ef23891a753f231b0c6f161dc634079a93@gmail.com>

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