fio_jobs: add fsync_on_close to fio args

This is to help facilitate the update of the fio_ubuntu binary to fio-3.3

Change-Id: I4c896dc60255f821a5cf66af818396f210304f07
Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/395394
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>

test/vhost/common/fio_jobs/default_initiator.job

@@ -6,3 +6,4 @@ time_based=1
 do_verify=1
 verify=md5
 verify_backlog=1024
+fsync_on_close=1

test/vhost/common/fio_jobs/default_integrity.job

@@ -15,4 +15,5 @@ rw=randwrite
 do_verify=1
 verify=md5
 verify_backlog=1024
+fsync_on_close=1
 [nvme-host]

test/vhost/common/fio_jobs/default_performance.job

@@ -12,4 +12,5 @@ thread
 numjobs=1
 direct=1
 rw=randread
+fsync_on_close=1
 [nvme-host]