ci/debian-buster: add deps for dnstap in kresd

From distro packages, just libprotobuf-c-dev and golang-any are new,
but I also broke the overlong line and reorganized its contents a bit.

ci/debian-buster/Dockerfile

@@ -15,7 +15,18 @@ RUN apt-get update -qq
 # RUN apt-get upgrade -y -qqq
 
 # Knot and Knot Resolver dependecies
-RUN apt-get install -y -qqq git make cmake pkg-config build-essential bsdmainutils libtool autoconf liburcu-dev libgnutls28-dev libedit-dev liblmdb-dev libcap-ng-dev libsystemd-dev libidn11-dev protobuf-c-compiler libfstrm-dev libuv1-dev libcmocka-dev libluajit-5.1-dev lua-http meson libssl-dev libnghttp2-dev libelf-dev
+RUN apt-get install -y -qqq git make cmake pkg-config meson \
+	build-essential bsdmainutils libtool autoconf libcmocka-dev \
+	liburcu-dev libgnutls28-dev libedit-dev liblmdb-dev libcap-ng-dev libsystemd-dev \
+	libelf-dev libidn11-dev libuv1-dev \
+	libluajit-5.1-dev lua-http libssl-dev libnghttp2-dev
+
+# Build and testing deps for Resolver's dnstap module (go stuff is just for testing)
+RUN apt-get install -y -qqq \
+	protobuf-c-compiler libprotobuf-c-dev libfstrm-dev \
+	golang-any
+RUN bash -c "go get github.com/{FiloSottile/gvt,cloudflare/dns,dnstap/golang-dnstap}"
+
 # documentation dependecies
 RUN apt-get install -y -qqq doxygen python3-sphinx python3-breathe python3-sphinx-rtd-theme