This builds on "PR#6121 net: Add NetworkNamespace APIS"
to add Network Namespace support to imtcp module. This
extends imtcp to support a wider range of Unix/Linux
environments (or any environment supporting network
namespaces).
The imtcp module is enhanced to accept a NetworkNamespace
parameter, both as a default at the module level, and
on a per-instance basis.
The tcpsrv module is enhanced to allow the NetworkNamespace
to be applied to a listener's configuration parameters.
Finally, the netstrm module is enhanced to switch namespaces
before invoking the downstream (driver specific) LstnInit
function.
A new test imtcp-netns (and associated imtcp-netns-vg) is
added to test this functionality. This must be run as root
(technically it must be run by a user with CAP_SYS_ADMIN
capabilities, as network namespace creating/change is
required).
A slight change to diag.sh is made to allow passing $RS_REDIR
to valgrind (as $RS_REDIR is used in the imtcp-netns.sh
test for some negative cases).
Signed-off-by: Billie Alsup <balsup@cisco.com>
