Fix nfs3_write to sync writes when requested

Signed-off-by: Allison Henderson <achender@vnet.linux.ibm.com>
Merge branch 'tp/jv_simplefix' into ibm_next_2Xmerge_tmp
Merge branch 'tp/config.txt' into ibm_next_2Xmerge_tmp
Merge branch 'tp/checkpatch' into ibm_next_2Xmerge_tmp
Merge branch 'tp/sync_fixv5' into ibm_next_2Xmerge_tmp