jail and host user

[gronke]

Two JailConfig properties jail_user and host_user should define which user accounts are used to execute commands in the jail or the host system.

[gronke]

From the iocage man page:

Name	Default	Description
exec_system_jail_user	0	This boolean option looks for the exec_jail_user file in the system rather than the jail's file.
exec_system_user	root	Run commands as this user in the system environment. The default is to run commands as the current user.