Use the getcredhostname function to fill the hostname into the linux_newuname_args structure.  This should fix the case of jailed linux processes not using the jail's hostname.
Use the getcredhostname function to fill the hostname into
the linux_newuname_args structure.  This should fix the case
of jailed linux processes not using the jail's hostname.

PR:		35336
Reviewed by:	phk

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase