Add getLogicalRouters() method to ModelHelper.
Add getLogicalRouters() and getLogicalRoutersNames() to chassis capability, exporting the second one through REST API.
Update ListLogicalRoutersCommand using getLogicalRoutersNames() capability method.
Add interface management methods to model helper and their wrapper classes.
Add interface management methods to ChassisCapability.
Modifty ShowInterfacesCommand using new capability methods.
Add hashCode and equals methods.
Add hashCode and equals methods plus a rename.
Merge pull request #801 from logoff/restapi/chassis

Update Chassis capability REST API