peerstore: changed sqlite to async operations


git-svn-id: https://gnunet.org/svn/gnunet@33539 140774ce-b5e7-0310-ab8b-a85725594a96
remove protocol violation
- this issue can occur when 2 peers use the same addresses, for example private ip addresses
So if a remote peer uses and publishes the same private address as the local peer, we might receive our own id if we try to connect it


git-svn-id: https://gnunet.org/svn/gnunet@33540 140774ce-b5e7-0310-ab8b-a85725594a96