As DhcpElement/VirtualRouterElement/RedundantVirtualRouterElement is decided to
be the service provider of the physical network, this API should be called to
add a new element, with correlated network service provider ID.
Then e.g. ConfigureVirtualRouterElementCmd should be called to configure and
enable the element.
Add configure command for these virtual router based elements. The commands
should be different for different elements.
The context of configuration would be added later.
Changes:
- Added a new interface 'PluggableService'
- Any component that can be packaged separately from cloudstack, can implement this interface and provide its own property file listing the API commands the component supports
- As an example have made VirtualNetworkApplianceService pluggable and a new configureRouter command is added
- ComponentLocator reads all the pluggable service from componentLibrary or from components.xml and instantiates the services.
- As an example, DefaultComponentLibrary adds the pluggable service 'VirtualNetworkApplianceService'
- Also components.xml.in has an entry to show how a pluggable service can be added, but it is commented out.
- APIServer now reads the commands for each pluggable service and when a command for such a service is called, APIServer sets the required instance of the pluggable service in the coomand.
- To do this a new annotation '@PlugService' is added that is processed by APIServer. This eliminates the dependency on the BaseCmd to instantiate the service instances.
