For interfaces which are slave links to a bounded interface, do not
allow sub-interface creation nor interface state to be changed.
Change "show interface" to display interface state as "bond-slave"
for slave links to a bonded interface.
Change "show hardware" to support a "bond" keyword and display slave
links to a bonded interface.
Change-Id: I4db3cae6985bcb1489ab16a07c72c5ee9b2f2dd3
Signed-off-by: John Lo <loj@cisco.com>
bcebbb988d