Move DnsPacket to libs/net

This class might be used by some mainline modules.
Cut the dependency between it and framework base classes.

Bug: 151052811
Test: atest DnsPacketTest
Test: atest DnsResolverTest
Change-Id: Id12aaedb6dd75144ca9b58b94bfcd845a1f16360
2 files changed
tree: 4da58d92bccbfc5203f8c7d0164d8138c0ee1950
  1. common/
  2. .gitignore
  3. PREUPLOAD.cfg