The enhancement includes:
1. Creates tenant for each vlan on the unity system. So that the nas
server in different vlan will have isolated IP address space.
2. Select the appropriate port on the system to create interface based
on MTU.
3. Remove the option unity_server_container (the old
emc_nas_server_container option) to enable the storage processors load
balance and the auto-selection of ports (by mtu).
DocImpact
Change-Id: Ic1140112f8cfbed7c89d5f66e6bee0c22d64b3ed
Closes-Bug: 1649458