Move DnsPacket to libs net

This class might be used by some mainline modules.

Bug: 151052811
Test: atest DnsPacketTest
Test: atest DnsResolverTest
(clean cherry-pick from internal branch)
Merged-In: I8841d91456952ded5efbf8ea221289aecc7746ad
Change-Id: I8841d91456952ded5efbf8ea221289aecc7746ad
1 file changed
tree: 611bab2623815792887940266f6506f79d4d3f5e
  1. core/
  2. services/
  3. tests/