use infinite timeout in work_queue:submit_sync_work/2
use infinite timeout in work_queue:submit_sync_work/2

I.e. default timeout of 5 seconds is just too low.

Change-Id: Iead7d0840715b9845d5dcf66506c52bc698ae65d
Reviewed-on: http://review.couchbase.org/31691
Tested-by: Aliaksey Kandratsenka <340b8e09ca65cd3fc686427fcfed17e87eaf61e2@gmail.com>
Reviewed-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>

membase/ns_server,nimishzynga/ns_server,mschoch/ns_server,mschoch/ns_server,nimishzynga/ns_server,membase/ns_server,daverigby/ns_server,membase/ns_server,membase/ns_server,daverigby/ns_server,mschoch/ns_server,t3rm1n4l/ns_server,t3rm1n4l/ns_server,daverigby/ns_server,nimishzynga/ns_server,ceejatec/ns_server,ceejatec/ns_server,t3rm1n4l/ns_server,t3rm1n4l/ns_server,daverigby/ns_server,membase/ns_server,mschoch/ns_server,mschoch/ns_server,ceejatec/ns_server,membase/ns_server,nimishzynga/ns_server,t3rm1n4l/ns_server,ceejatec/ns_server,mschoch/ns_server,nimishzynga/ns_server,ceejatec/ns_server,daverigby/ns_server,nimishzynga/ns_server,ceejatec/ns_server