SENSOR service integration


git-svn-id: https://gnunet.org/svn/gnunet@33063 140774ce-b5e7-0310-ab8b-a85725594a96
-comments for surpiti

git-svn-id: https://gnunet.org/svn/gnunet@33064 140774ce-b5e7-0310-ab8b-a85725594a96
test sensor definitions


git-svn-id: https://gnunet.org/svn/gnunet@33065 140774ce-b5e7-0310-ab8b-a85725594a96