Add more of the libnl-route API for nsjail am: d51bf7e713 am: 3b418d01f1 am: 045e63678e am: 749b89cd45

Original change: https://android-review.googlesource.com/c/platform/external/libnl/+/1813629

Change-Id: I99e934efb61ec415870a542a6c7c58898876cbec