virt-v2v fails when' /etc/fstab' contains a cifs mount line with "password=" option

Issue

• virt-v2v fails when converting vms from vmware to rhev with the below error message if /etc/fstab contained a cifs line with password= in the options field.

"inspect_os: could not parse /etc/fstab or empty file at /usr/share/perl5/vendor_perl/Sys/VirtConvert/GuestfsHandle.pm line 187.   at /usr/bin/virt-v2v line 602"

• The problematic line in /etc/fstab was as below.

domain.org/share_v2 /mnt cifs defaults,ro,password= 0 0

• Commenting out above line in /etc/fstab or removing = from the password= or adding a password after password= should work around this problem.