fileserver should actually retry VL_RegisterAddrs on failure

fileserver should actually retry VL_RegisterAddrs on failure

currently the background daemon logic for retrying was never triggered.
easy enough fix: set FS_registered to 1 so the loop retries

Reviewed-on: http://gerrit.openafs.org/266
Tested-by: Derrick Brashear <shadow@dementia.org>
Reviewed-by: Derrick Brashear <shadow@dementia.org>
(cherry picked from commit 160aff88be210a8141b67a54583aed7387d8bffc)
Reviewed-on: http://gerrit.openafs.org/459