Add UDP Encap Socket Support to IpSecManager

-Implement the UdpEncapsulationSocket
-Convert all ManagedResources to use resourceIds
-Rework ManagedResource to track resourceIds

Bug: 30984788
Test: cts - IpSecManagerTest#testUdpEncapsulation()

Change-Id: I7b1099c487051a8d951c1485791c4b6cef2deb1d
11 files changed