Add test to check IpClientLinkObserver stops working when ENOBUFS happens.

Currently if the ENOBUFS happens then netlink socket will be closed
completely, this results in even the IpClientLinkObserver is still
running but netlink socket has been closed, all of upcoming netlink
messages will be dropped.

Bug: 232680956
Test: atest testNetlinkSocketReceiveENOBUFS
Merged-In: Iae8e9512cd5bbf5a91fec7ecb934b692027c47ee
Change-Id: Iae8e9512cd5bbf5a91fec7ecb934b692027c47ee
1 file changed