udev rules: fix value update method

[alexminder]

Redirection for setting sysfs values is not reliable method. In my case it fails to update disk timeout.
udev have built-in writing attributes value mechanism.

[vmwclabot]

@alexminder, you must sign our contributor license agreement before your changes are merged. Click here to sign the agreement. If you are a VMware employee, read this for further instruction.

[vmwclabot]

@alexminder, your company's legal contact did not review your signed contributor license agreement within the 14 day limit. The merge can not proceed. Click here to resign the agreement.

[vmwclabot]

@alexminder, your company's legal contact has approved your signed contributor license agreement. It will also be reviewed by VMware, but the merge can proceed.

[vmwclabot]

@alexminder, VMware has approved your signed contributor license agreement.