Add lint baseline to address NewApi errors am: 81be76f836 am: aaa189659c

Original change: https://android-review.googlesource.com/c/platform/frameworks/libs/net/+/1675805

Change-Id: Ie359c560aa0ce12eb58d9762bd503276bcec5511
tree: 73b96fe6ed863553042efa73d4e00cae5311aa5e
  1. staticlibs/