This feature enables adding of guest ip ranges (public ips) form different subnets.
In order to provide the dhcp service to a different subnet we create an ipalias on the router. This allows the router to listen to the dhcp request from the guest vms and respond accordingly. Every time a vm is deployed in the new subnet we configure an ip alias on the router. Cloudstack uses dnsmasq to provide dhcp service. We need to configure the dnsmasq to issue ips on the new subnets. Added a new class dnsmasqconfigurator which generates the dnsmasq confg file, this file replaces the old config in the router.
The details of the alias ips are stored in db in the nic_ip_alias table. Every time a new subnet is added one of the ip from the subnet is used to configure the ip alias.
I have pushed the code to https://github.com/bvbharatk/cloud-stack/tree/Cloudstack-702 , also rebased the code with master.
I need to test the code for advanced sg enabled network using kvm.
I have added the unit test
Marvin tests are at https://git-wip-us.apache.org/repos/asf?p=cloudstack.git;h=53e4965
Also accomodated some of the changes suggested by koushik.
corrected the import statements. renamed the IpAlias command to createIpAlias command.
This feature supports only ipv4
1) In unittest, removed the unsed Dao from components scan
2) Netscaler and InternalLb element shouldn't impelement VPC provider as they provide only LB services support
An input parameter was incorrectly interpreted during egress rule creation and so resulted in NPE. Created a new vnmc xml for handling creation of egress rule with protocol as 'All'
Due to VNMC limitation source nat ip cannot be assigned to ASA 1000v outside interface. Working around this issue by acquiring additional public ip during network implement and assigning that to outside interface of ASA. Also made changes to ensure that source nat policy comes after pf and static nat policies in terms of evaluation by assigning a high 'order' value for it.
