Add XFRM-I support to IpSecService

This change adds support for XFRM-I to all IpSecService netd calls.
Fallback logic is in netd, and thus both VTI and XFRM-I parameters are
always passed down to IpSecService.

Bug: 78589502
Test: All java, CTS tests passing
Change-Id: Ie4186f0ad7e50763b21831f6fa411b5ee436de78

tests/net/java/android/net/IpSecConfigTest.java

@@ -47,6 +47,7 @@ public class IpSecConfigTest {
         assertNull(c.getEncryption());
         assertNull(c.getAuthentication());
         assertEquals(IpSecManager.INVALID_RESOURCE_ID, c.getSpiResourceId());
+        assertEquals(0, c.getXfrmInterfaceId());
     }
 
     private IpSecConfig getSampleConfig() {
@@ -77,6 +78,7 @@ public class IpSecConfigTest {
         c.setNattKeepaliveInterval(42);
         c.setMarkValue(12);
         c.setMarkMask(23);
+        c.setXfrmInterfaceId(34);
 
         return c;
     }