update net/dnscrypt-proxy 2.0.30

Here is an update for net/dnscrypt-proxy 2.0.30, released on Oct. 30,
2019.

https://github.com/DNSCrypt/dnscrypt-proxy/releases/tag/2.0.30

Changelogs:
https://github.com/DNSCrypt/dnscrypt-proxy/commit/899cd072390d9ca1344a9bde682e5d3460cf1539
https://github.com/DNSCrypt/dnscrypt-proxy/releases/tag/2.0.29

2.0.30 fixes a regression in 2.0.29 where DNS stopped working.

Issue: https://github.com/DNSCrypt/dnscrypt-proxy/issues/998
Upstream fix in 2.0.30:
https://github.com/DNSCrypt/dnscrypt-proxy/commit/37c939480d79deb9571290fbb62724d7c20f7432

The main addition in 2.0.29 is anonymized DNS. "Routes are indirect ways
to reach DNSCrypt servers. A route maps a server name ("server_name") to
one or more relays that will be used to connect to that server."

/var/dnscrypt-proxy/relays.md is now added to the port and is
populated after an initial run of dnscrypt-proxy.

In /etc/dnscrypt-proxy.toml, I have the following:

server_names = ['scaleway-fr', 'google', 'yandex', 'cloudflare']

routes = [
{ server_name='google', via=['anon-kama', 'anon-scaleway'] },
{ server_name='cloudflare', via=['anon-kama', 'anon-scaleway'] },
]

However, I am not sure how to actually confirm that the anonymous DNS
relays are used. If I enable query logging:

[query_log]
file = '/var/dnscrypt-proxy/query.log'

$ touch /var/dnscrypt-proxy/query.log
$ chown _dnscrypt-proxy /var/dnscrypt-proxy/query.log

I see logged queries of the form:

[2019-10-30 17:57:02] 127.0.0.1 openbsd.org A PASS 59ms cloudflare

with no mention of the anonymous DNS relay used. It seems that logging
the relay used is not yet implemented. Overall, I tested 2.0.30 on amd64
and it works, unbreaking 2.0.29.

Feedback and tests are welcome.

Index: Makefile
===================================================================
RCS file: /cvs/ports/net/dnscrypt-proxy/Makefile,v
retrieving revision 1.45
diff -u -p -u -p -r1.45 Makefile
--- Makefile 15 Oct 2019 04:18:20 -0000 1.45
+++ Makefile 31 Oct 2019 00:41:08 -0000
@@ -4,7 +4,7 @@ COMMENT = flexible DNS proxy with suppor

GH_ACCOUNT = jedisct1
GH_PROJECT = dnscrypt-proxy
-GH_TAGNAME = 2.0.28
+GH_TAGNAME = 2.0.30

CATEGORIES = net

Index: distinfo
===================================================================
RCS file: /cvs/ports/net/dnscrypt-proxy/distinfo,v
retrieving revision 1.21
diff -u -p -u -p -r1.21 distinfo
--- distinfo 15 Oct 2019 04:18:20 -0000 1.21
+++ distinfo 31 Oct 2019 00:41:08 -0000
@@ -1,2 +1,2 @@
-SHA256 (dnscrypt-proxy-2.0.28.tar.gz) = K6KDQ97RUjPGnCNTzOFZqyrU5+troBjK9JXh5dMz2G0=
-SIZE (dnscrypt-proxy-2.0.28.tar.gz) = 2620245
+SHA256 (dnscrypt-proxy-2.0.30.tar.gz) = 9h2vIB2AtzDdNvTH8YiLjKV3ZXL3p3nZowboxZDjiMA=
+SIZE (dnscrypt-proxy-2.0.30.tar.gz) = 2622298
Index: patches/patch-dnscrypt-proxy_example-dnscrypt-proxy_toml
===================================================================
RCS file: /cvs/ports/net/dnscrypt-proxy/patches/patch-dnscrypt-proxy_example-dnscrypt-proxy_toml,v
retrieving revision 1.6
diff -u -p -u -p -r1.6 patch-dnscrypt-proxy_example-dnscrypt-proxy_toml
--- patches/patch-dnscrypt-proxy_example-dnscrypt-proxy_toml 15 Oct 2019 04:18:20 -0000 1.6
+++ patches/patch-dnscrypt-proxy_example-dnscrypt-proxy_toml 31 Oct 2019 00:41:08 -0000
@@ -12,7 +12,7 @@ Index: dnscrypt-proxy/example-dnscrypt-p


## Require servers (from static + remote sources) to satisfy specific properties
-@@ -525,7 +525,7 @@ cache_neg_max_ttl = 600
+@@ -537,7 +537,7 @@ cache_neg_max_ttl = 600

[sources.'public-resolvers']
urls = ['https://raw.githubusercontent.com/DNSCrypt/dnscrypt-resolvers/master/v2/public-resolvers.md', 'https://download.dnscrypt.info/resolvers-list/v2/public-resolvers.md']
@@ -21,3 +21,12 @@ Index: dnscrypt-proxy/example-dnscrypt-p
minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'
prefix = ''

+@@ -545,7 +545,7 @@ cache_neg_max_ttl = 600
+
+ [sources.'relays']
+ urls = ['https://github.com/DNSCrypt/dnscrypt-resolvers/raw/master/v2/relays.md', 'https://download.dnscrypt.info/resolvers-list/v2/relays.md']
+- cache_file = 'relays.md'
++ cache_file = '${LOCALSTATEDIR}/dnscrypt-proxy/relays.md'
+ minisign_key = 'RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3'
+ refresh_delay = 72
+ prefix = ''