It appears it is being used by Rendezvous, and if that protocol is not
being used there is no need to set `AdvertiseAddr` either.
I also adjusted all the `Makefile`s to not depend on `PUBLIC_IP` variable.
Signed-off-by: Jakub Sokołowski <jakub@status.im>
This commits adds support for postgres database.
Currently two fields are stored: the bloom filter and the topic.
Only the bloom filter is actually used to query, but potentially we will
use also the topic in the future, so easier to separate it now in order
to avoid a migration.