Comment 17 for bug 1491506

Reviewed: https://review.opencontrail.org/25796
Committed: http://github.org/Juniper/contrail-controller/commit/644dd9b9b5de1033ab0fe8ed8e32c2719045a640
Submitter: Zuul
Branch: master

commit 644dd9b9b5de1033ab0fe8ed8e32c2719045a640
Author: sbalineni <email address hidden>
Date: Mon Nov 7 16:32:01 2016 -0800

[DM]: Allocate ip from each subnet of VN for lo0 interface

- allocate ip from each subnet of VN (non-external L3 VNs) and configure lo0 interface
- lo0 interface ifl unit number is calculated as 1000 + vn_id
- for now, do not allocate this ip if vn is type external
- persist allocated IPs in DB, and on restart use same allocated ips
- on delete, free up allocated ips
- Cassandra Key indexing format is changed for supporting both irb & lo0
- Upgrade issue is taken care
- Added UT cases
- Fixed ip_alloc recent regression issue (bad parameter was passed to virtual_network_ip_alloc api)

Generated Config:

root@cmbu-tasman# show groups __contrail__ interfaces lo0 | display set
set groups __contrail__ interfaces lo0 unit 0 family inet address 172.16.184.200/32 primary
set groups __contrail__ interfaces lo0 unit 0 family inet address 172.16.184.200/32 preferred
set groups __contrail__ interfaces lo0 unit 1210 family inet address 40.0.0.6/32

[edit]
root@cmbu-tasman# show groups __contrail__ interfaces lo0 | display xml
<rpc-reply xmlns:junos="http://xml.juniper.net/junos/14.2R6/junos">
<configuration junos:changed-seconds="1471546906" junos:changed-localtime="2016-08-18 12:01:46 PDT">
<groups>
<name>__contrail__</name>
<interfaces>
<interface>
<name>lo0</name>
<unit>
<name>0</name>
<family>
<inet>
<address>
<name>172.16.184.200/32</name>
<primary/>
<preferred/>
</address>
</inet>
</family>
</unit>
<unit>
<name>1210</name>
<family>
<inet>
<address>
<name>40.0.0.6/32</name>
</address>
</inet>
</family>
</unit>
</interface>
</interfaces>
</groups>
</configuration>
<cli>
<banner>[edit]</banner>
</cli>
</rpc-reply>

Change-Id: I2104b0f5a2f72c824e1e14e464271b7bb44106f5
Closes-Bug: #1491506