This fixes#160 by making sure that nodes will sign *any*
lockup they see using their guardian key, and storing
the gs in the aggregation state when we see a lockup.
Tested on a live devnet via `scripts/test-injection.sh 0`.
ghstack-source-id: 92489c2455e677433414dfa66c6917a577e4c4a5
Pull Request resolved: https://github.com/certusone/wormhole/pull/104