hyperstart: User and groups are not handled properly
hyperstart: User and groups are not handled properly

Because hyperstart fails the user setup when providing some user,
groups or additional groups, it is better not to fill those fields
until we fixed hyperstart.

Notice that a user setup failure prevent the workload to be executed
because the execve() is never called.

Signed-off-by: Sebastien Boeuf <90b401417360b1924ef3f520ddee932686110f85@intel.com>

containers/virtcontainers,containers/virtcontainers