rename hellos to use new base32 encoding

git-svn-id: https://gnunet.org/svn/gnunet@33744 140774ce-b5e7-0310-ab8b-a85725594a96
output public key of peer

git-svn-id: https://gnunet.org/svn/gnunet@33745 140774ce-b5e7-0310-ab8b-a85725594a96