Config LBAAS changes:
Point right VMI of LB service instance to the same instance IP as VIP instance IP.
Change the keyword type to monitor-type so that it doesn't conflict with internal keyword.
Do not create the default instance for loadbalancer resources.
Fix service mode for haproxy template
Set SNAT ha mode to active-standby
Changes to allow same network/subnte for vip and pool

Agent LBAAS changes:
Creating operational db as loadbalancer-pool and
creating a listener for config db. Corresponding test changes
Propogating LB changes to Service instance to give a SIGHUP to HAProxy
Adding the Dependency tracket after SetObject(). This is a fix from mainline
Destroying and creating the Namespace only if command does not contain --update
Update status check for netns based services
Removing the haproxy config file as part of destroy
Updating the config file of haproxy by sending -sf arguments rather SIGHUP

Change-Id: Icab46f3236a36bfda16f519c5d6985826b5e0786