[Fix Pattern] Use root user permission since nobody user fails

[hukoyu]

In some LTP tests nobody user is used instead of root user. sgx-lkl is a single user solution. For these syscall tests actually it doesn't matter who does the action. To enable these tests we used root user for taking the actions (and opened bugs in lsds/sgx for nobody user errors).

LTP tests fixed with this pattern: (Count: 14)

setregid02
setgid02
setfsgid03
setfsuid03
open08
chmod03
fchmod03, fchmod04
fchown03
utime02, utime05
truncate03
symlink03
chroot02