MFC 7768 Use mount -u instead of umount -f way for remounting filesystem ro or rw.
MFC 7768
Use mount -u instead of umount -f way for remounting filesystem ro or rw.

dennypage/pfsense,BlackstarGroup/pfsense,brunostein/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,phil-davis/pfsense,ch1c4um/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,NOYB/pfsense,dennypage/pfsense,brunostein/pfsense,pfsense/pfsense,phil-davis/pfsense,ch1c4um/pfsense,ch1c4um/pfsense,dennypage/pfsense,NOYB/pfsense,BlackstarGroup/pfsense,phil-davis/pfsense,NewEraCracker/pfsense,jxmx/pfsense,NewEraCracker/pfsense,jxmx/pfsense,pfsense/pfsense,dennypage/pfsense,jxmx/pfsense,NOYB/pfsense,brunostein/pfsense,pfsense/pfsense,ptorsten/pfsense,pfsense/pfsense,ch1c4um/pfsense,BlackstarGroup/pfsense,BlackstarGroup/pfsense,phil-davis/pfsense