1. Add ContrailVRouterApi which provides AddPort, DeletePort APIs
   using Thrift to enable plug and unplug support
2. Replace tabs with space in pom.xml
3. Package Thrift java code in net.juniper.contrail.contrail_vrouter_api
4. Dependency cleanup for vcenter-monitor
5. Fix compile for vcenter-monitor

Tests for ContrailVRouterApi to follow.

Change-Id: I43f710458c47df3e2dae2b5845ccd0e0c60e4c2b
Merge "1. Add ContrailVRouterApi which provides AddPort, DeletePort APIs    using Thrift to enable plug and unplug support 2. Replace tabs with space in pom.xml 3. Package Thrift java code in net.juniper.contrail.contrail_vrouter_api 4. Dependency cleanup for vcenter-monitor 5. Fix compile for vcenter-monitor"