The IPv6 address logged at the startup like `::1:80` was
wrong because the port isn't clearly separated. This commit
corrects it, now logging as `[::1]:80`.
This is done in accordance to RFC 3986. In short, we did this
have a clear separation between the port and host because
the components of an IPv6 are separated with the ':' character.
Signed-off-by: Taimoor Zaeem <taimoorzaeem@gmail.com>
It's very unlikely, but it can (and did) happen that both the server and
admin ports have the same number returned from freeport(). This then
leads to a situation where PostgREST will accept the same port in both
cases, because the host "localhost" will allow binding to ipv4 or ipv6
respectively. This will make the IO tests fail.
This change makes sure that the admin port will never be the same as the
server port and thus avoids this problem.
