We had previously patched afsd to have an -exit option that would
exit with a success return value but not try to start the client
(needed for the installation scenario where no kernel module is
available), but afsd -help now performs that role.
Change-Id: I4c6032779754a5b1547bf4428eef162347dbd278
do_nothing_env() {
cat > /var/cache/openafs-client/openafs-client.env <<EOF
-AFSD_ARGS=-exit
+AFSD_ARGS=-help
AFS_SETCRYPT=-help
AFS_SYSNAME=-help
KMOD=--version